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41 changed files with 1658 additions and 1293 deletions

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@ -1,17 +0,0 @@
name: Build
on:
push:
branches:
- 'master'
jobs:
# deploy it upstream
deploy:
runs-on: docker
steps:
- name: "Deploy to Skynet"
uses: https://forgejo.skynet.ie/Skynet/actions-deploy-to-skynet@v2
with:
input: 'simple-nixos-mailserver'
token: ${{ secrets.API_TOKEN_FORGEJO }}

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@ -3,11 +3,11 @@ hydra-pr:
- merge_requests
image: nixos/nix
script:
- nix-shell -I nixpkgs=channel:nixos-22.05 -p hydra-cli --run 'hydra-cli -H https://hydra.nix-community.org jobset-wait simple-nixos-mailserver ${CI_MERGE_REQUEST_IID}'
- nix run -f channel:nixos-unstable hydra-cli -- -H https://hydra.nix-community.org jobset-wait simple-nixos-mailserver ${CI_MERGE_REQUEST_IID}
hydra-master:
only:
- master
image: nixos/nix
script:
- nix-shell -I nixpkgs=channel:nixos-22.05 -p hydra-cli --run 'hydra-cli -H https://hydra.nix-community.org jobset-wait simple-nixos-mailserver master'
- nix run -f channel:nixos-unstable hydra-cli -- -H https://hydra.nix-community.org jobset-wait simple-nixos-mailserver master

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@ -17,6 +17,35 @@ let
flake = "gitlab:simple-nixos-mailserver/nixos-mailserver/merge-requests/${info.iid}/head";
}
) prs;
# This could be removed once branch 20.09 and 21.05 would have been
# removed.
mkJobset = branch: {
description = "Build ${branch} branch of Simple NixOS MailServer";
checkinterval = "60";
enabled = "1";
schedulingshares = 100;
enableemail = false;
emailoverride = "";
nixexprinput = "snm";
nixexprpath = ".hydra/default.nix";
type = 0;
inputs = {
# This is only used to allow Niv to use pkgs.fetchzip which is
# required because of Hydra restricted evaluation mode.
nixpkgs = {
value = "https://github.com/NixOS/nixpkgs b6eefa48d8e10491e43c0c6155ac12b463f6fed3";
type = "git";
emailresponsible = false;
};
snm = {
value = "https://gitlab.com/simple-nixos-mailserver/nixos-mailserver ${branch}";
type = "git";
emailresponsible = false;
};
};
keepnr = 3;
hidden = false;
};
mkFlakeJobset = branch: {
description = "Build ${branch} branch of Simple NixOS MailServer";
checkinterval = "60";
@ -32,8 +61,8 @@ let
desc = prJobsets // {
"master" = mkFlakeJobset "master";
"nixos-23.11" = mkFlakeJobset "nixos-23.11";
"nixos-24.05" = mkFlakeJobset "nixos-24.05";
"nixos-21.05" = mkJobset "nixos-21.05";
"nixos-21.11" = mkFlakeJobset "nixos-21.11";
};
log = {

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@ -5,17 +5,9 @@
version: 2
build:
os: ubuntu-22.04
os: ubuntu-20.04
tools:
python: "3"
apt_packages:
- nix
- proot
jobs:
pre_install:
- mkdir -p ~/.nix ~/.config/nix
- echo "experimental-features = nix-command flakes" > ~/.config/nix/nix.conf
- proot -b ~/.nix:/nix /bin/sh -c "nix build -L .#optionsDoc && cp -v result docs/options.md"
python: "3.9"
sphinx:
configuration: docs/conf.py

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@ -8,21 +8,29 @@
For each NixOS release, we publish a branch. You then have to use the
SNM branch corresponding to your NixOS version.
* For NixOS 24.05
- Use the [SNM branch `nixos-24.05`](https://gitlab.com/simple-nixos-mailserver/nixos-mailserver/-/tree/nixos-24.05)
- [Documentation](https://nixos-mailserver.readthedocs.io/en/nixos-24.05/)
- [Release notes](https://nixos-mailserver.readthedocs.io/en/nixos-24.05/release-notes.html#nixos-24-05)
* For NixOS 23.11
- Use the [SNM branch `nixos-23.11`](https://gitlab.com/simple-nixos-mailserver/nixos-mailserver/-/tree/nixos-23.11)
- [Documentation](https://nixos-mailserver.readthedocs.io/en/nixos-23.11/)
- [Release notes](https://nixos-mailserver.readthedocs.io/en/nixos-23.11/release-notes.html#nixos-23-11)
* For NixOS 21.11
- Use the [SNM branch `nixos-21.11`](https://gitlab.com/simple-nixos-mailserver/nixos-mailserver/-/tree/nixos-21.11)
- [Documentation](https://nixos-mailserver.readthedocs.io/en/nixos-21.11/)
- [Release notes](https://nixos-mailserver.readthedocs.io/en/nixos-21.11/release-notes.html#nixos-21-11)
* For NixOS 21.05
- Use the [SNM branch `nixos-21.05`](https://gitlab.com/simple-nixos-mailserver/nixos-mailserver/-/tree/nixos-21.05)
- [Documentation](https://nixos-mailserver.readthedocs.io/en/nixos-21.05/)
- [Release notes](https://nixos-mailserver.readthedocs.io/en/nixos-21.05/release-notes.html#nixos-21-05)
* For NixOS unstable
- Use the [SNM branch `master`](https://gitlab.com/simple-nixos-mailserver/nixos-mailserver/-/tree/master)
- [Documentation](https://nixos-mailserver.readthedocs.io/en/latest/)
- This branch is currently supporting the NixOS release 21.11 but
we could remove this support on any NixOS unstable breaking
change.
[Subscribe to SNM Announcement List](https://www.freelists.org/list/snm)
This is a very low volume list where new releases of SNM are announced, so you
can stay up to date with bug fixes and updates.
can stay up to date with bug fixes and updates. All announcements are signed by
the gpg key with fingerprint
```
D9FE 4119 F082 6F15 93BD BD36 6162 DBA5 635E A16A
```
## Features
@ -71,15 +79,71 @@ can stay up to date with bug fixes and updates.
- Subscribe to the [mailing list](https://www.freelists.org/archive/snm/)
- Join the Libera Chat IRC channel `#nixos-mailserver`
### Quick Start
```nix
{ config, pkgs, ... }:
let release = "nixos-21.05";
in {
imports = [
(builtins.fetchTarball {
url = "https://gitlab.com/simple-nixos-mailserver/nixos-mailserver/-/archive/${release}/nixos-mailserver-${release}.tar.gz";
# This hash needs to be updated
sha256 = "0000000000000000000000000000000000000000000000000000";
})
];
mailserver = {
enable = true;
fqdn = "mail.example.com";
domains = [ "example.com" "example2.com" ];
loginAccounts = {
"user1@example.com" = {
# nix run nixpkgs.apacheHttpd -c htpasswd -nbB "" "super secret password" | cut -d: -f2 > /hashed/password/file/location
hashedPasswordFile = "/hashed/password/file/location";
aliases = [
"info@example.com"
"postmaster@example.com"
"postmaster@example2.com"
];
};
};
};
}
```
For a complete list of options, see `default.nix`.
## How to Set Up a 10/10 Mail Server Guide
Check out the [Complete Setup Guide](https://nixos-mailserver.readthedocs.io/en/latest/setup-guide.html) in the project's documentation.
Check out the [Setup Guide](https://nixos-mailserver.readthedocs.io/en/latest/setup-guide.html) in the project's documentation.
## How to Backup
For a complete list of options, [see in readthedocs](https://nixos-mailserver.readthedocs.io/en/latest/options.html).
Checkout the [Complete Backup Guide](https://nixos-mailserver.readthedocs.io/en/latest/backup-guide.html). Backups are easy with `SNM`.
## Development
See the [How to Develop SNM](https://nixos-mailserver.readthedocs.io/en/latest/howto-develop.html) documentation page.
See the [How to Develop SNM](https://nixos-mailserver.readthedocs.io/en/latest/howto-develop.html) wiki page.
## Release notes
### nixos-20.03
- Rspamd is upgraded to 2.0 which deprecates the SQLite Bayes
backend. We then moved to the Redis backend (the default since
Rspamd 2.0). If you don't want to relearn the Redis backend from the
scratch, we could manually run
rspamadm statconvert --spam-db /var/lib/rspamd/bayes.spam.sqlite --ham-db /var/lib/rspamd/bayes.ham.sqlite -h 127.0.0.1:6379 --symbol-ham BAYES_HAM --symbol-spam BAYES_SPAM
See the [Rspamd migration
notes](https://rspamd.com/doc/migration.html#migration-to-rspamd-20)
and [this SNM Merge
Request](https://gitlab.com/simple-nixos-mailserver/nixos-mailserver/-/merge_requests/164)
for details.
## Contributors
See the [contributor tab](https://gitlab.com/simple-nixos-mailserver/nixos-mailserver/-/graphs/master)
@ -94,4 +158,6 @@ See the [contributor tab](https://gitlab.com/simple-nixos-mailserver/nixos-mails
* Logo made with [Logomakr.com](https://logomakr.com)
[logo]: docs/logo.png

View file

@ -48,11 +48,7 @@ in
type = types.listOf types.str;
example = [ "imap.example.com" "pop3.example.com" ];
default = [];
description = ''
({option}`mailserver.certificateScheme` == `acme-nginx`)
Secondary domains and subdomains for which it is necessary to generate a certificate.
'';
description = "Secondary domains and subdomains for which it is necessary to generate a certificate.";
};
messageSizeLimit = mkOption {
@ -76,14 +72,14 @@ in
default = null;
example = "$6$evQJs5CFQyPAW09S$Cn99Y8.QjZ2IBnSu4qf1vBxDRWkaIZWOtmu1Ddsm3.H3CFpeVc0JU4llIq8HQXgeatvYhh5O33eWG3TSpjzu6/";
description = ''
The user's hashed password. Use `mkpasswd` as follows
The user's hashed password. Use `htpasswd` as follows
```
nix-shell -p mkpasswd --run 'mkpasswd -sm bcrypt'
nix run nixpkgs.apacheHttpd -c htpasswd -nbB "" "super secret password" | cut -d: -f2
```
Warning: this is stored in plaintext in the Nix store!
Use {option}`mailserver.loginAccounts.<name>.hashedPasswordFile` instead.
Use `hashedPasswordFile` instead.
'';
};
@ -92,10 +88,10 @@ in
default = null;
example = "/run/keys/user1-passwordhash";
description = ''
A file containing the user's hashed password. Use `mkpasswd` as follows
A file containing the user's hashed password. Use `htpasswd` as follows
```
nix-shell -p mkpasswd --run 'mkpasswd -sm bcrypt'
nix run nixpkgs.apacheHttpd -c htpasswd -nbB "" "super secret password" | cut -d: -f2
```
'';
};
@ -111,15 +107,6 @@ in
'';
};
aliasesRegexp = mkOption {
type = with types; listOf types.str;
example = [''/^tom\..*@domain\.com$/''];
default = [];
description = ''
Same as {option}`mailserver.aliases` but using PCRE (Perl compatible regex).
'';
};
catchAll = mkOption {
type = with types; listOf (enum cfg.domains);
example = ["example.com" "example2.com"];
@ -169,7 +156,7 @@ in
description = ''
Specifies if the account should be a send-only account.
Emails sent to send-only accounts will be rejected from
unauthorized senders with the `sendOnlyRejectMessage`
unauthorized senders with the sendOnlyRejectMessage
stating the reason.
'';
};
@ -197,174 +184,23 @@ in
};
description = ''
The login account of the domain. Every account is mapped to a unix user,
e.g. `user1@example.com`. To generate the passwords use `mkpasswd` as
e.g. `user1@example.com`. To generate the passwords use `htpasswd` as
follows
```
nix-shell -p mkpasswd --run 'mkpasswd -sm bcrypt'
nix run nixpkgs.apacheHttpd -c htpasswd -nbB "" "super secret password" | cut -d: -f2
```
'';
default = {};
};
ldap = {
enable = mkEnableOption "LDAP support";
uris = mkOption {
type = types.listOf types.str;
example = literalExpression ''
[
"ldaps://ldap1.example.com"
"ldaps://ldap2.example.com"
]
'';
description = ''
URIs where your LDAP server can be reached
'';
};
startTls = mkOption {
type = types.bool;
default = false;
description = ''
Whether to enable StartTLS upon connection to the server.
'';
};
tlsCAFile = mkOption {
type = types.path;
default = "${pkgs.cacert}/etc/ssl/certs/ca-bundle.crt";
defaultText = lib.literalMD "see [source](https://gitlab.com/simple-nixos-mailserver/nixos-mailserver/-/blob/master/default.nix)";
description = ''
Certifificate trust anchors used to verify the LDAP server certificate.
'';
};
bind = {
dn = mkOption {
type = types.str;
example = "cn=mail,ou=accounts,dc=example,dc=com";
description = ''
Distinguished name used by the mail server to do lookups
against the LDAP servers.
'';
};
passwordFile = mkOption {
type = types.str;
example = "/run/my-secret";
description = ''
A file containing the password required to authenticate against the LDAP servers.
'';
};
};
searchBase = mkOption {
type = types.str;
example = "ou=people,ou=accounts,dc=example,dc=com";
description = ''
Base DN at below which to search for users accounts.
'';
};
searchScope = mkOption {
type = types.enum [ "sub" "base" "one" ];
default = "sub";
description = ''
Search scope below which users accounts are looked for.
'';
};
dovecot = {
userAttrs = mkOption {
type = types.nullOr types.str;
default = "";
description = ''
LDAP attributes to be retrieved during userdb lookups.
See the users_attrs reference at
https://doc.dovecot.org/configuration_manual/authentication/ldap_settings_auth/#user-attrs
in the Dovecot manual.
'';
};
userFilter = mkOption {
type = types.str;
default = "mail=%u";
example = "(&(objectClass=inetOrgPerson)(mail=%u))";
description = ''
Filter for user lookups in Dovecot.
See the user_filter reference at
https://doc.dovecot.org/configuration_manual/authentication/ldap_settings_auth/#user-filter
in the Dovecot manual.
'';
};
passAttrs = mkOption {
type = types.str;
default = "userPassword=password";
description = ''
LDAP attributes to be retrieved during passdb lookups.
See the pass_attrs reference at
https://doc.dovecot.org/configuration_manual/authentication/ldap_settings_auth/#pass-attrs
in the Dovecot manual.
'';
};
passFilter = mkOption {
type = types.nullOr types.str;
default = "mail=%u";
example = "(&(objectClass=inetOrgPerson)(mail=%u))";
description = ''
Filter for password lookups in Dovecot.
See the pass_filter reference for
https://doc.dovecot.org/configuration_manual/authentication/ldap_settings_auth/#pass-filter
in the Dovecot manual.
'';
};
};
postfix = {
filter = mkOption {
type = types.str;
default = "mail=%s";
example = "(&(objectClass=inetOrgPerson)(mail=%s))";
description = ''
LDAP filter used to search for an account by mail, where
`%s` is a substitute for the address in
question.
'';
};
uidAttribute = mkOption {
type = types.str;
default = "mail";
example = "uid";
description = ''
The LDAP attribute referencing the account name for a user.
'';
};
mailAttribute = mkOption {
type = types.str;
default = "mail";
description = ''
The LDAP attribute holding mail addresses for a user.
'';
};
};
};
indexDir = mkOption {
type = types.nullOr types.str;
default = null;
description = ''
Folder to store search indices. If null, indices are stored
along with email, which could not necessarily be desirable,
especially when {option}`mailserver.fullTextSearch.enable` is `true` since
especially when the fullTextSearch option is enable since
indices it creates are voluminous and do not need to be backed
up.
@ -406,8 +242,8 @@ in
default = "no";
description = ''
Fail searches when no index is available. If set to
`body`, then only body searches (as opposed to
header) are affected. If set to `no`, searches may
<literal>body</literal>, then only body searches (as opposed to
header) are affected. If set to <literal>no<literal>, searches may
fall back to a very slow brute force search.
'';
};
@ -445,7 +281,7 @@ in
randomizedDelaySec = mkOption {
type = types.int;
default = 1000;
description = "Run the maintenance job not exactly at the time specified with `onCalendar`, but plus or minus this many seconds.";
description = "Run the maintenance job not exactly at the time specified with <literal>onCalendar</literal>, but plus or minus this many seconds.";
};
};
};
@ -464,6 +300,7 @@ in
type = let
loginAccount = mkOptionType {
name = "Login Account";
check = (account: builtins.elem account (builtins.attrNames cfg.loginAccounts));
};
in with types; attrsOf (either loginAccount (nonEmptyListOf loginAccount));
example = {
@ -496,7 +333,7 @@ in
the value {`"user@example.com" = "user@elsewhere.com";}`
means that mails to `user@example.com` are forwarded to
`user@elsewhere.com`. The difference with the
{option}`mailserver.extraVirtualAliases` option is that `user@elsewhere.com`
`extraVirtualAliases` option is that `user@elsewhere.com`
can't send mail as `user@example.com`. Also, this option
allows to forward mails to external addresses.
'';
@ -530,7 +367,7 @@ in
description = ''
The unix UID of the virtual mail user. Be mindful that if this is
changed, you will need to manually adjust the permissions of
`mailDirectory`.
mailDirectory.
'';
};
@ -573,14 +410,6 @@ in
'';
};
useUTF8FolderNames = mkOption {
type = types.bool;
default = false;
description = ''
Store mailbox names on disk using UTF-8 instead of modified UTF-7 (mUTF-7).
'';
};
hierarchySeparator = mkOption {
type = types.str;
default = ".";
@ -619,26 +448,19 @@ in
};
};
certificateScheme = let
schemes = [ "manual" "selfsigned" "acme-nginx" "acme" ];
translate = i: warn "Setting mailserver.certificateScheme by number is deprecated, please use names instead: 'mailserver.certificateScheme = ${builtins.toString i}' can be replaced by 'mailserver.certificateScheme = \"${(builtins.elemAt schemes (i - 1))}\"'."
(builtins.elemAt schemes (i - 1));
in mkOption {
type = with types; coercedTo (enum [ 1 2 3 ]) translate (enum schemes);
default = "selfsigned";
certificateScheme = mkOption {
type = types.enum [ 1 2 3 ];
default = 2;
description = ''
The scheme to use for managing TLS certificates:
Certificate Files. There are three options for these.
1. `manual`: you specify locations via {option}`mailserver.certificateFile` and
{option}`mailserver.keyFile` and manually copy certificates there.
2. `selfsigned`: you let the server create new (self-signed) certificates on the fly.
3. `acme-nginx`: you let the server request certificates from [Let's Encrypt](https://letsencrypt.org)
via NixOS' ACME module. By default, this will set up a stripped-down Nginx server for
{option}`mailserver.fqdn` and open port 80. For this to work, the FQDN must be properly
configured to point to your server (see the [setup guide](setup-guide.rst) for more information).
4. `acme`: you already have an ACME certificate set up (for example, you're already running a TLS-enabled
Nginx server on the FQDN). This is better than `manual` because the appropriate services will be reloaded
when the certificate is renewed.
1) You specify locations and manually copy certificates there.
2) You let the server create new (self signed) certificates on the fly.
3) You let the server create a certificate via `Let's Encrypt`. Note that
this implies that a stripped down webserver has to be started. This also
implies that the FQDN must be set as an `A` record to point to the IP of
the server. In particular port 80 on the server will be opened. For details
on how to set up the domain records, see the guide in the readme.
'';
};
@ -646,9 +468,8 @@ in
type = types.path;
example = "/root/mail-server.crt";
description = ''
({option}`mailserver.certificateScheme` == `manual`)
Location of the certificate.
Scheme 1)
Location of the certificate
'';
};
@ -656,9 +477,8 @@ in
type = types.path;
example = "/root/mail-server.key";
description = ''
({option}`mailserver.certificateScheme` == `manual`)
Location of the key file.
Scheme 1)
Location of the key file
'';
};
@ -666,27 +486,13 @@ in
type = types.path;
default = "/var/certs";
description = ''
({option}`mailserver.certificateScheme` == `selfsigned`)
This is the folder where the self-signed certificate will be created. The name is
hardcoded to "cert-DOMAIN.pem" and "key-DOMAIN.pem" and the
Scheme 2)
This is the folder where the certificate will be created. The name is
hardcoded to "cert-<domain>.pem" and "key-<domain>.pem" and the
certificate is valid for 10 years.
'';
};
acmeCertificateName = mkOption {
type = types.str;
default = cfg.fqdn;
example = "example.com";
description = ''
({option}`mailserver.certificateScheme` == `acme`)
When the `acme` `certificateScheme` is selected, you can use this option
to override the default certificate name. This is useful if you've
generated a wildcard certificate, for example.
'';
};
enableImap = mkOption {
type = types.bool;
default = true;
@ -776,7 +582,7 @@ in
type = types.str;
default = "mail";
description = ''
The DKIM selector.
'';
};
@ -784,7 +590,7 @@ in
type = types.path;
default = "/var/dkim";
description = ''
The DKIM directory.
'';
};
@ -795,7 +601,7 @@ in
How many bits in generated DKIM keys. RFC6376 advises minimum 1024-bit keys.
If you have already deployed a key with a different number of bits than specified
here, then you should use a different selector ({option}`mailserver.dkimSelector`). In order to get
here, then you should use a different selector (dkimSelector). In order to get
this package to generate a key with the new number of bits, you will either have to
change the selector or delete the old key file.
'';
@ -821,67 +627,6 @@ in
'';
};
dmarcReporting = {
enable = mkOption {
type = types.bool;
default = false;
description = ''
Whether to send out aggregated, daily DMARC reports in response to incoming
mail, when the sender domain defines a DMARC policy including the RUA tag.
This is helpful for the mail ecosystem, because it allows third parties to
get notified about SPF/DKIM violations originating from their sender domains.
See https://rspamd.com/doc/modules/dmarc.html#reporting
'';
};
localpart = mkOption {
type = types.str;
default = "dmarc-noreply";
example = "dmarc-report";
description = ''
The local part of the email address used for outgoing DMARC reports.
'';
};
domain = mkOption {
type = types.enum (cfg.domains);
example = "example.com";
description = ''
The domain from which outgoing DMARC reports are served.
'';
};
email = mkOption {
type = types.str;
default = with cfg.dmarcReporting; "${localpart}@${domain}";
defaultText = literalExpression ''"''${localpart}@''${domain}"'';
readOnly = true;
description = ''
The email address used for outgoing DMARC reports. Read-only.
'';
};
organizationName = mkOption {
type = types.str;
example = "ACME Corp.";
description = ''
The name of your organization used in the `org_name` attribute in
DMARC reports.
'';
};
fromName = mkOption {
type = types.str;
default = cfg.dmarcReporting.organizationName;
defaultText = literalMD "{option}`mailserver.dmarcReporting.organizationName`";
description = ''
The sender name for DMARC reports. Defaults to the organization name.
'';
};
};
debug = mkOption {
type = types.bool;
default = false;
@ -923,7 +668,7 @@ in
type = types.str;
# read the default from nixos' redis module
default = let
cf = config.services.redis.servers.rspamd.bind;
cf = config.services.redis.bind;
cfdefault = if cf == null then "127.0.0.1" else cf;
ips = lib.strings.splitString " " cfdefault;
ip = lib.lists.head (ips ++ [ "127.0.0.1" ]);
@ -932,27 +677,28 @@ in
if (ip == "0.0.0.0" || ip == "::")
then "127.0.0.1"
else if isIpv6 ip then "[${ip}]" else ip;
defaultText = lib.literalMD "computed from `config.services.redis.servers.rspamd.bind`";
description = ''
Address that rspamd should use to contact redis.
Address that rspamd should use to contact redis. The default value
is read from <literal>config.services.redis.bind</literal>.
'';
};
port = mkOption {
type = types.port;
default = config.services.redis.servers.rspamd.port;
defaultText = lib.literalExpression "config.services.redis.servers.rspamd.port";
default = config.services.redis.port;
description = ''
Port that rspamd should use to contact redis.
Port that rspamd should use to contact redis. The default value is
read from <literal>config.services.redis.port<literal>.
'';
};
password = mkOption {
type = types.nullOr types.str;
default = config.services.redis.servers.rspamd.requirePass;
defaultText = lib.literalExpression "config.services.redis.servers.rspamd.requirePass";
default = config.services.redis.requirePass;
description = ''
Password that rspamd should use to contact redis, or null if not required.
Password that rspamd should use to contact redis, or null if not
required. The default value is read from
<literal>config.services.redis.requirePass<literal>.
'';
};
};
@ -967,25 +713,10 @@ in
'';
};
smtpdForbidBareNewline = mkOption {
type = types.bool;
default = true;
description = ''
With "smtpd_forbid_bare_newline = yes", the Postfix SMTP server
disconnects a remote SMTP client that sends a line ending in a 'bare
newline'.
This feature was added in Postfix 3.8.4 against SMTP Smuggling and will
default to "yes" in Postfix 3.9.
https://www.postfix.org/smtp-smuggling.html
'';
};
sendingFqdn = mkOption {
type = types.str;
default = cfg.fqdn;
defaultText = lib.literalMD "{option}`mailserver.fqdn`";
defaultText = "config.mailserver.fqdn";
example = "myserver.example.com";
description = ''
The fully qualified domain name of the mail server used to
@ -1001,7 +732,7 @@ in
This setting allows the server to identify as
myserver.example.com when forwarding mail, independently of
{option}`mailserver.fqdn` (which, for SSL reasons, should generally be the name
`fqdn` (which, for SSL reasons, should generally be the name
to which the user connects).
Set this to the name to which the sending IP's reverse DNS
@ -1069,11 +800,10 @@ in
stop program = "${pkgs.systemd}/bin/systemctl stop dovecot2"
if failed host ${cfg.fqdn} port 993 type tcpssl sslauto protocol imap for 5 cycles then restart
check process rspamd with matching "rspamd: main process"
check process rspamd with pidfile /var/run/rspamd.pid
start program = "${pkgs.systemd}/bin/systemctl start rspamd"
stop program = "${pkgs.systemd}/bin/systemctl stop rspamd"
'';
defaultText = lib.literalMD "see [source](https://gitlab.com/simple-nixos-mailserver/nixos-mailserver/-/blob/master/default.nix)";
description = ''
The configuration used for monitoring via monit.
Use a mail address that you actively check and set it via 'set alert ...'.
@ -1090,8 +820,7 @@ in
description = ''
The location where borg saves the backups.
This can be a local path or a remote location such as user@host:/path/to/repo.
It is exported and thus available as an environment variable to
{option}`mailserver.borgbackup.cmdPreexec` and {option}`mailserver.borgbackup.cmdPostexec`.
It is exported and thus available as an environment variable to cmdPreexec and cmdPostexec.
'';
};
@ -1151,14 +880,13 @@ in
default = "none";
description = ''
The backup can be encrypted by choosing any other value than 'none'.
When using encryption the password/passphrase must be provided in `passphraseFile`.
When using encryption the password / passphrase must be provided in passphraseFile.
'';
};
passphraseFile = mkOption {
type = types.nullOr types.path;
default = null;
description = "Path to a file containing the encryption password or passphrase.";
};
};
@ -1174,7 +902,6 @@ in
locations = mkOption {
type = types.listOf types.path;
default = [cfg.mailDirectory];
defaultText = lib.literalExpression "[ config.mailserver.mailDirectory ]";
description = "The locations that are to be backed up by borg.";
};
@ -1195,9 +922,8 @@ in
default = null;
description = ''
The command to be executed before each backup operation.
This is called prior to borg init in the same script that runs borg init and create and `cmdPostexec`.
'';
example = ''
This is called prior to borg init in the same script that runs borg init and create and cmdPostexec.
Example:
export BORG_RSH="ssh -i /path/to/private/key"
'';
};
@ -1208,7 +934,7 @@ in
description = ''
The command to be executed after each backup operation.
This is called after borg create completed successfully and in the same script that runs
`cmdPreexec`, borg init and create.
cmdPreexec, borg init and create.
'';
};
@ -1221,7 +947,7 @@ in
example = true;
description = ''
Whether to enable automatic reboot after kernel upgrades.
This is to be used in conjunction with `system.autoUpgrade.enable = true;`
This is to be used in conjunction with system.autoUpgrade.enable = true"
'';
};
method = mkOption {
@ -1296,7 +1022,6 @@ in
};
imports = [
./mail-server/assertions.nix
./mail-server/borgbackup.nix
./mail-server/debug.nix
./mail-server/rsnapshot.nix

View file

@ -4,8 +4,8 @@ Add Radicale
Configuration by @dotlambda
Starting with Radicale 3 (first introduced in NixOS 20.09) the traditional
crypt passwords are no longer supported. Instead bcrypt passwords
have to be used. These can still be generated using `mkpasswd -m bcrypt`.
crypt passwords, as generated by `mkpasswd`, are no longer supported. Instead
bcrypt passwords have to be used which can be generated using `htpasswd`.
.. code:: nix
@ -24,13 +24,12 @@ have to be used. These can still be generated using `mkpasswd -m bcrypt`.
in {
services.radicale = {
enable = true;
settings = {
auth = {
type = "htpasswd";
htpasswd_filename = "${htpasswd}";
htpasswd_encryption = "bcrypt";
};
};
config = ''
[auth]
type = htpasswd
htpasswd_filename = ${htpasswd}
htpasswd_encryption = bcrypt
'';
};
services.nginx = {

View file

@ -1,32 +0,0 @@
Add Roundcube, a webmail
========================
The NixOS module for roundcube nearly works out of the box with SNM. By
default, it sets up a nginx virtual host to serve the webmail, other web
servers may require more work.
.. code:: nix
{ config, pkgs, lib, ... }:
with lib;
{
services.roundcube = {
enable = true;
# this is the url of the vhost, not necessarily the same as the fqdn of
# the mailserver
hostName = "webmail.example.com";
extraConfig = ''
# starttls needed for authentication, so the fqdn required to match
# the certificate
$config['smtp_host'] = "tls://${config.mailserver.fqdn}";
$config['smtp_user'] = "%u";
$config['smtp_pass'] = "%p";
'';
};
services.nginx.enable = true;
networking.firewall.allowedTCPPorts = [ 80 443 ];
}

View file

@ -1,18 +0,0 @@
Autodiscovery
=============
`RFC6186 <https://www.rfc-editor.org/rfc/rfc6186>`_ allows supporting email clients to automatically discover SMTP / IMAP addresses
of the mailserver. For that, the following records are required:
================= ==== ==== ======== ====== ==== =================
Record TTL Type Priority Weight Port Value
================= ==== ==== ======== ====== ==== =================
_submission._tcp 3600 SRV 5 0 587 mail.example.com.
_submissions._tcp 3600 SRV 5 0 465 mail.example.com.
_imap._tcp 3600 SRV 5 0 143 mail.example.com.
_imaps._tcp 3600 SRV 5 0 993 mail.example.com.
================= ==== ==== ======== ====== ==== =================
Please note that only a few MUAs currently implement this. For vendor-specific
discovery mechanisms `automx <https://github.com/rseichter/automx2>`_ can be used instead.

View file

@ -18,7 +18,7 @@
# -- Project information -----------------------------------------------------
project = 'NixOS Mailserver'
copyright = '2022, NixOS Mailserver Contributors'
copyright = '2020, NixOS Mailserver Contributors'
author = 'NixOS Mailserver Contributors'
@ -28,16 +28,8 @@ author = 'NixOS Mailserver Contributors'
# extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
# ones.
extensions = [
'myst_parser'
]
myst_enable_extensions = [
'colon_fence',
'linkify',
]
smartquotes = False
# Add any paths that contain templates here, relative to this directory.
templates_path = ['_templates']
@ -58,4 +50,4 @@ html_theme = 'sphinx_rtd_theme'
# Add any paths that contain custom static files (such as style sheets) here,
# relative to this directory. They are copied after the builtin static files,
# so a file named "default.css" will overwrite the builtin "default.css".
html_static_path = []
html_static_path = ['_static']

View file

@ -42,7 +42,7 @@ Indices created by the full text search feature can take more disk
space than the emails themselves. By default, they are kept in the
emails location. When enabling the full text search feature, it is
recommended to move indices in a different location, such as
(``/var/lib/dovecot/indices``) by using the option
(``/var/lib/docecot/indices/%d/%n``) by using the option
``mailserver.indexDir``.
.. warning::

View file

@ -10,7 +10,7 @@ Run NixOS tests
---------------
To run the test suite, you need to enable `Nix Flakes
<https://nixos.wiki/wiki/Flakes#Installing_flakes>`_.
<https://nixos.wiki/wiki/Flakes#Installing_flakes>`.
You can then run the testsuite via
@ -30,20 +30,28 @@ run tests manually. For instance:
Contributing to the documentation
---------------------------------
The documentation is written in RST (except option documentation which is in CommonMark),
built with Sphinx and published by `Read the Docs <https://readthedocs.org/>`_.
The documentation is written in RST, build with Sphinx and published
by `Read the Docs <https://readthedocs.org/>`_.
For the syntax, see the `RST/Sphinx primer
<https://www.sphinx-doc.org/en/master/usage/restructuredtext/basics.html>`_.
To build the documentation, you need to enable `Nix Flakes
<https://nixos.wiki/wiki/Flakes#Installing_flakes>`_.
For the syntax, see `RST/Sphinx Cheatsheet
<https://sphinx-tutorial.readthedocs.io/cheatsheet/>`_.
The ``shell.nix`` provides all the tooling required to build the
documentation:
::
$ nix build .#documentation
$ xdg-open result/index.html
$ nix-shell
$ cd docs
$ make html
$ firefox ./_build/html/index.html
Note if you modify some NixOS mailserver options, you would also need
to regenerate the ``options.rst`` file:
::
$ nix-shell --run generate-rst-options
Nixops
------

View file

@ -25,12 +25,9 @@ Welcome to NixOS Mailserver's documentation!
backup-guide
add-radicale
add-roundcube
rspamd-tuning
fts
flakes
autodiscovery
ldap
Indices and tables
==================

View file

@ -1,14 +0,0 @@
LDAP Support
============
It is possible to manage mail user accounts with LDAP rather than with
the option `loginAccounts <options.html#mailserver-loginaccounts>`_.
All related LDAP options are described in the `LDAP options section
<options.html#mailserver-ldap>`_ and the `LDAP test
<https://gitlab.com/simple-nixos-mailserver/nixos-mailserver/-/blob/master/tests/ldap.nix>`_
provides a getting started example.
.. note::
The LDAP support can not be enabled if some accounts are also defined with ``mailserver.loginAccounts``.

1165
docs/options.rst Normal file

File diff suppressed because it is too large Load diff

View file

@ -1,36 +1,6 @@
Release Notes
=============
NixOS 24.05
-----------
- Add new option ``acmeCertificateName`` which can be used to support
wildcard certificates
NixOS 23.11
-----------
- Add basic support for LDAP users
- Add support for regex (PCRE) aliases
NixOS 23.05
-----------
- Existing ACME certificates can be reused without configuring NGINX
- Certificate scheme is no longer a number, but a meaningful string instead
NixOS 22.11
-----------
- Allow Rspamd to send DMARC reporting
(`merge request <https://gitlab.com/simple-nixos-mailserver/nixos-mailserver/-/merge_requests/244>`__)
NixOS 22.05
-----------
- Make NixOS Mailserver options discoverable from search.nixos.org
- Add a roundcube setup guide in the documentation
NixOS 21.11
-----------

View file

@ -1,4 +1,2 @@
sphinx ~= 5.3
sphinx_rtd_theme ~= 1.1
myst-parser ~= 0.18
linkify-it-py ~= 2.0
sphinx==4.0.2
sphinx_rtd_theme==0.5.2

View file

@ -48,19 +48,18 @@ Setup the server
~~~~~~~~~~~~~~~~
The following describes a server setup that is fairly complete. Even
though there are more possible options (see the `NixOS Mailserver
options documentation <options.html>`_), these should be the most
common ones.
though there are more possible options (see the ``default.nix`` file),
these should be the most common ones.
.. code:: nix
{ config, pkgs, ... }: {
{ config, pkgs, ... }:
{
imports = [
(builtins.fetchTarball {
# Pick a release version you are interested in and set its hash, e.g.
url = "https://gitlab.com/simple-nixos-mailserver/nixos-mailserver/-/archive/nixos-23.05/nixos-mailserver-nixos-23.05.tar.gz";
# To get the sha256 of the nixos-mailserver tarball, we can use the nix-prefetch-url command:
# release="nixos-23.05"; nix-prefetch-url "https://gitlab.com/simple-nixos-mailserver/nixos-mailserver/-/archive/${release}/nixos-mailserver-${release}.tar.gz" --unpack
# Pick a commit from the branch you are interested in
url = "https://gitlab.com/simple-nixos-mailserver/nixos-mailserver/-/archive/A-COMMIT-ID/nixos-mailserver-A-COMMIT-ID.tar.gz";
# And set its hash
sha256 = "0000000000000000000000000000000000000000000000000000";
})
];
@ -71,7 +70,7 @@ common ones.
domains = [ "example.com" ];
# A list of all login accounts. To create the password hashes, use
# nix-shell -p mkpasswd --run 'mkpasswd -sm bcrypt'
# nix run nixpkgs.apacheHttpd -c htpasswd -nbB "" "super secret password" | cut -d: -f2
loginAccounts = {
"user1@example.com" = {
hashedPasswordFile = "/a/file/containing/a/hashed/password";
@ -82,10 +81,8 @@ common ones.
# Use Let's Encrypt certificates. Note that this needs to set up a stripped
# down nginx and opens port 80.
certificateScheme = "acme-nginx";
certificateScheme = 3;
};
security.acme.acceptTerms = true;
security.acme.defaults.email = "security@example.com";
}
After a ``nixos-rebuild switch`` your server should be running all
@ -99,14 +96,7 @@ Set rDNS (reverse DNS) entry for server
Wherever you have rented your server, you should be able to set reverse
DNS entries for the IPs you own. Add an entry resolving ``1.2.3.4``
to ``mail.example.com``.
.. warning::
We don't recommend setting up a mail server if you are not able to
set a reverse DNS on your public IP because sent emails would be
mostly marked as spam. Note that many residential ISP providers
don't allow you to set a reverse DNS entry.
to ``mail.example.com``
You can check this with

View file

@ -16,29 +16,13 @@
"type": "gitlab"
}
},
"flake-compat": {
"flake": false,
"locked": {
"lastModified": 1696426674,
"narHash": "sha256-kvjfFW7WAETZlt09AgDn1MrtKzP7t90Vf7vypd3OL1U=",
"owner": "edolstra",
"repo": "flake-compat",
"rev": "0f9255e01c2351cc7d116c072cb317785dd33b33",
"type": "github"
},
"original": {
"owner": "edolstra",
"repo": "flake-compat",
"type": "github"
}
},
"nixpkgs": {
"locked": {
"lastModified": 1717602782,
"narHash": "sha256-pL9jeus5QpX5R+9rsp3hhZ+uplVHscNJh8n8VpqscM0=",
"lastModified": 1626852498,
"narHash": "sha256-lOXUJvi0FJUXHTVSiC5qsMRtEUgqM4mGZpMESLuGhmo=",
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "e8057b67ebf307f01bdcc8fba94d94f75039d1f6",
"rev": "16105403bdd843540cbef9c63fc0f16c1c6eaa70",
"type": "github"
},
"original": {
@ -47,27 +31,58 @@
"type": "indirect"
}
},
"nixpkgs-24_05": {
"nixpkgs-21_05": {
"locked": {
"lastModified": 1717144377,
"narHash": "sha256-F/TKWETwB5RaR8owkPPi+SPJh83AQsm6KrQAlJ8v/uA=",
"lastModified": 1625692408,
"narHash": "sha256-e9L3TLLDVIJpMnHtiNHJE62oOh6emRtSZ244bgYJUZs=",
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "805a384895c696f802a9bf5bf4720f37385df547",
"rev": "c06613c25df3fe1dd26243847a3c105cf6770627",
"type": "github"
},
"original": {
"id": "nixpkgs",
"ref": "nixos-24.05",
"ref": "nixos-21.05",
"type": "indirect"
}
},
"nixpkgs-21_11": {
"locked": {
"lastModified": 1638371214,
"narHash": "sha256-0kE6KhgH7n0vyuX4aUoGsGIQOqjIx2fJavpCWtn73rc=",
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "a640d8394f34714578f3e6335fc767d0755d78f9",
"type": "github"
},
"original": {
"id": "nixpkgs",
"ref": "nixos-21.11",
"type": "indirect"
}
},
"root": {
"inputs": {
"blobs": "blobs",
"flake-compat": "flake-compat",
"nixpkgs": "nixpkgs",
"nixpkgs-24_05": "nixpkgs-24_05"
"nixpkgs-21_05": "nixpkgs-21_05",
"nixpkgs-21_11": "nixpkgs-21_11",
"utils": "utils"
}
},
"utils": {
"locked": {
"lastModified": 1605370193,
"narHash": "sha256-YyMTf3URDL/otKdKgtoMChu4vfVL3vCMkRqpGifhUn0=",
"owner": "numtide",
"repo": "flake-utils",
"rev": "5021eac20303a61fafe17224c087f5519baed54d",
"type": "github"
},
"original": {
"owner": "numtide",
"repo": "flake-utils",
"type": "github"
}
}
},

121
flake.nix
View file

@ -2,30 +2,32 @@
description = "A complete and Simple Nixos Mailserver";
inputs = {
flake-compat = {
url = "github:edolstra/flake-compat";
flake = false;
};
utils.url = "github:numtide/flake-utils";
nixpkgs.url = "flake:nixpkgs/nixos-unstable";
nixpkgs-24_05.url = "flake:nixpkgs/nixos-24.05";
nixpkgs-21_05.url = "flake:nixpkgs/nixos-21.05";
nixpkgs-21_11.url = "flake:nixpkgs/nixos-21.11";
blobs = {
url = "gitlab:simple-nixos-mailserver/blobs";
flake = false;
};
};
outputs = { self, blobs, nixpkgs, nixpkgs-24_05, ... }: let
lib = nixpkgs.lib;
outputs = { self, utils, blobs, nixpkgs, nixpkgs-21_05, nixpkgs-21_11 }: let
system = "x86_64-linux";
pkgs = nixpkgs.legacyPackages.${system};
# We want to test nixos-mailserver on several nixos releases
releases = [
{
name = "unstable";
pkgs = nixpkgs.legacyPackages.${system};
}
{
name = "24.05";
pkgs = nixpkgs-24_05.legacyPackages.${system};
name = "21_05";
pkgs = nixpkgs-21_05.legacyPackages.${system};
}
{
name = "21_11";
pkgs = nixpkgs-21_11.legacyPackages.${system};
}
];
testNames = [
@ -33,10 +35,9 @@
"external"
"clamav"
"multiple"
"ldap"
];
genTest = testName: release: {
"name"= "${testName}-${builtins.replaceStrings ["."] ["_"] release.name}";
"name"= "${testName}-${release.name}";
"value"= import (./tests/. + "/${testName}.nix") {
pkgs = release.pkgs;
inherit blobs;
@ -48,80 +49,90 @@
# external-21_05 = <derivation>;
# ...
# }
allTests = lib.listToAttrs (
lib.flatten (map (t: map (r: genTest t r) releases) testNames));
allTests = pkgs.lib.listToAttrs (
pkgs.lib.flatten (map (t: map (r: genTest t r) releases) testNames));
mailserverModule = import ./.;
# Generate a MarkDown file describing the options of the NixOS mailserver module
optionsDoc = let
eval = lib.evalModules {
# Generate a rst file describing options of the NixOS mailserver module
generateRstOptions = let
eval = import (pkgs.path + "/nixos/lib/eval-config.nix") {
inherit system;
modules = [
mailserverModule
{
_module.check = false;
mailserver = {
fqdn = "mx.example.com";
domains = [
"example.com"
];
dmarcReporting = {
organizationName = "Example Corp";
domain = "example.com";
};
};
# Because the blockbook package is currently broken (we
# don't care about this package but it is part of the
# NixOS module evaluation)
nixpkgs.config.allowBroken = true;
mailserver.fqdn = "mx.example.com";
}
];
};
options = builtins.toFile "options.json" (builtins.toJSON
(lib.filter (opt: opt.visible && !opt.internal && lib.head opt.loc == "mailserver")
(lib.optionAttrSetToDocList eval.options)));
in pkgs.runCommand "options.md" { buildInputs = [pkgs.python3Minimal]; } ''
echo "Generating options.md from ${options}"
python ${./scripts/generate-options.py} ${options} > $out
options = pkgs.nixosOptionsDoc {
options = eval.options;
};
in pkgs.runCommand "options.rst" { buildInputs = [pkgs.python3]; } ''
echo Generating options.rst from ${options.optionsJSON}/share/doc/nixos/options.json
python ${./scripts/generate-rst-options.py} ${options.optionsJSON}/share/doc/nixos/options.json > $out
'';
# This is a script helping users to generate this file in the docs directory
generateRstOptionsScript = pkgs.writeScriptBin "generate-rst-options" ''
cp -v ${generateRstOptions} ./docs/options.rst
'';
# This is to ensure we don't forget to update the options.rst file
testRstOptions = pkgs.runCommand "test-rst-options" {} ''
if ! diff -q ${./docs/options.rst} ${generateRstOptions}
then
echo "The file ./docs/options.rst is not up-to-date and needs to be regenerated!"
echo " hint: run 'nix-shell --run generate-rst-options' to generate this file"
exit 1
fi
echo "test: ok" > $out
'';
documentation = pkgs.stdenv.mkDerivation {
name = "documentation";
src = lib.sourceByRegex ./docs ["logo\\.png" "conf\\.py" "Makefile" ".*\\.rst"];
src = pkgs.lib.sourceByRegex ./docs ["logo.png" "conf.py" "Makefile" ".*rst$"];
buildInputs = [(
pkgs.python3.withPackages (p: with p; [
sphinx
sphinx_rtd_theme
myst-parser
linkify-it-py
pkgs.python3.withPackages(p: [
p.sphinx
p.sphinx_rtd_theme
])
)];
buildPhase = ''
cp ${optionsDoc} options.md
cp ${generateRstOptions} options.rst
mkdir -p _static
# Workaround for https://github.com/sphinx-doc/sphinx/issues/3451
unset SOURCE_DATE_EPOCH
export SOURCE_DATE_EPOCH=$(${pkgs.coreutils}/bin/date +%s)
make html
'';
installPhase = ''
cp -Tr _build/html $out
cp -r _build/html $out
'';
};
in {
nixosModules = rec {
mailserver = mailserverModule;
default = mailserver;
};
nixosModule = self.nixosModules.default; # compatibility
in rec {
nixosModules.mailserver = mailserverModule ;
nixosModule = self.nixosModules.mailserver;
hydraJobs.${system} = allTests // {
test-rst-options = testRstOptions;
inherit documentation;
};
checks.${system} = allTests;
packages.${system} = {
inherit optionsDoc documentation;
};
devShells.${system}.default = pkgs.mkShell {
inputsFrom = [ documentation ];
packages = with pkgs; [
devShell.${system} = pkgs.mkShell {
buildInputs = with pkgs; [
generateRstOptionsScript
(python3.withPackages (p: with p; [
sphinx
sphinx_rtd_theme
]))
jq
clamav
];
};
devShell.${system} = self.devShells.${system}.default; # compatibility
};
}

View file

@ -1,18 +0,0 @@
{ config, lib, pkgs, ... }:
{
assertions = lib.optionals config.mailserver.ldap.enable [
{
assertion = config.mailserver.loginAccounts == {};
message = "When the LDAP support is enable (mailserver.ldap.enable = true), it is not possible to define mailserver.loginAccounts";
}
{
assertion = config.mailserver.forwards == {};
message = "When the LDAP support is enable (mailserver.ldap.enable = true), it is not possible to define mailserver.forwards";
}
] ++ lib.optionals (config.mailserver.enable && config.mailserver.certificateScheme != "acme") [
{
assertion = config.mailserver.acmeCertificateName == config.mailserver.fqdn;
message = "When the certificate scheme is not 'acme' (mailserver.certificateScheme != \"acme\"), it is not possible to define mailserver.acmeCertificateName";
}
];
}

View file

@ -21,22 +21,22 @@ let
in
{
# cert :: PATH
certificatePath = if cfg.certificateScheme == "manual"
certificatePath = if cfg.certificateScheme == 1
then cfg.certificateFile
else if cfg.certificateScheme == "selfsigned"
else if cfg.certificateScheme == 2
then "${cfg.certificateDirectory}/cert-${cfg.fqdn}.pem"
else if cfg.certificateScheme == "acme" || cfg.certificateScheme == "acme-nginx"
then "${config.security.acme.certs.${cfg.acmeCertificateName}.directory}/fullchain.pem"
else throw "unknown certificate scheme";
else if cfg.certificateScheme == 3
then "${config.security.acme.certs.${cfg.fqdn}.directory}/fullchain.pem"
else throw "Error: Certificate Scheme must be in { 1, 2, 3 }";
# key :: PATH
keyPath = if cfg.certificateScheme == "manual"
keyPath = if cfg.certificateScheme == 1
then cfg.keyFile
else if cfg.certificateScheme == "selfsigned"
else if cfg.certificateScheme == 2
then "${cfg.certificateDirectory}/key-${cfg.fqdn}.pem"
else if cfg.certificateScheme == "acme" || cfg.certificateScheme == "acme-nginx"
then "${config.security.acme.certs.${cfg.acmeCertificateName}.directory}/key.pem"
else throw "unknown certificate scheme";
else if cfg.certificateScheme == 3
then "${config.security.acme.certs.${cfg.fqdn}.directory}/key.pem"
else throw "Error: Certificate Scheme must be in { 1, 2, 3 }";
passwordFiles = let
mkHashFile = name: hash: pkgs.writeText "${builtins.hashString "sha256" name}-password-hash" hash;
@ -45,26 +45,4 @@ in
if value.hashedPasswordFile == null then
builtins.toString (mkHashFile name value.hashedPassword)
else value.hashedPasswordFile) cfg.loginAccounts;
# Appends the LDAP bind password to files to avoid writing this
# password into the Nix store.
appendLdapBindPwd = {
name, file, prefix, suffix ? "", passwordFile, destination
}: pkgs.writeScript "append-ldap-bind-pwd-in-${name}" ''
#!${pkgs.stdenv.shell}
set -euo pipefail
baseDir=$(dirname ${destination})
if (! test -d "$baseDir"); then
mkdir -p $baseDir
chmod 755 $baseDir
fi
cat ${file} > ${destination}
echo -n '${prefix}' >> ${destination}
cat ${passwordFile} >> ${destination}
echo -n '${suffix}' >> ${destination}
chmod 600 ${destination}
'';
}

View file

@ -23,17 +23,14 @@ let
passwdDir = "/run/dovecot2";
passwdFile = "${passwdDir}/passwd";
userdbFile = "${passwdDir}/userdb";
# This file contains the ldap bind password
ldapConfFile = "${passwdDir}/dovecot-ldap.conf.ext";
bool2int = x: if x then "1" else "0";
maildirLayoutAppendix = lib.optionalString cfg.useFsLayout ":LAYOUT=fs";
maildirUTF8FolderNames = lib.optionalString cfg.useUTF8FolderNames ":UTF-8";
# maildir in format "/${domain}/${user}"
dovecotMaildir =
"maildir:${cfg.mailDirectory}/%d/%n${maildirLayoutAppendix}${maildirUTF8FolderNames}"
"maildir:${cfg.mailDirectory}/%d/%n${maildirLayoutAppendix}"
+ (lib.optionalString (cfg.indexDir != null)
":INDEX=${cfg.indexDir}/%d/%n"
);
@ -60,42 +57,6 @@ let
'';
};
ldapConfig = pkgs.writeTextFile {
name = "dovecot-ldap.conf.ext.template";
text = ''
ldap_version = 3
uris = ${lib.concatStringsSep " " cfg.ldap.uris}
${lib.optionalString cfg.ldap.startTls ''
tls = yes
''}
tls_require_cert = hard
tls_ca_cert_file = ${cfg.ldap.tlsCAFile}
dn = ${cfg.ldap.bind.dn}
sasl_bind = no
auth_bind = yes
base = ${cfg.ldap.searchBase}
scope = ${mkLdapSearchScope cfg.ldap.searchScope}
${lib.optionalString (cfg.ldap.dovecot.userAttrs != null) ''
user_attrs = ${cfg.ldap.dovecot.userAttrs}
''}
user_filter = ${cfg.ldap.dovecot.userFilter}
${lib.optionalString (cfg.ldap.dovecot.passAttrs != "") ''
pass_attrs = ${cfg.ldap.dovecot.passAttrs}
''}
pass_filter = ${cfg.ldap.dovecot.passFilter}
'';
};
setPwdInLdapConfFile = appendLdapBindPwd {
name = "ldap-conf-file";
file = ldapConfig;
prefix = ''dnpass = "'';
suffix = ''"'';
passwordFile = cfg.ldap.bind.passwordFile;
destination = ldapConfFile;
};
genPasswdScript = pkgs.writeScript "generate-password-file" ''
#!${pkgs.stdenv.shell}
@ -106,9 +67,6 @@ let
chmod 755 "${passwdDir}"
fi
# Prevent world-readable password files, even temporarily.
umask 077
for f in ${builtins.toString (lib.mapAttrsToList (name: value: passwordFiles."${name}") cfg.loginAccounts)}; do
if [ ! -f "$f" ]; then
echo "Expected password hash file $f does not exist!"
@ -118,18 +76,14 @@ let
cat <<EOF > ${passwdFile}
${lib.concatStringsSep "\n" (lib.mapAttrsToList (name: value:
"${name}:${"$(head -n 1 ${passwordFiles."${name}"})"}::::::"
) cfg.loginAccounts)}
EOF
cat <<EOF > ${userdbFile}
${lib.concatStringsSep "\n" (lib.mapAttrsToList (name: value:
"${name}:::::::"
"${name}:${"$(head -n 1 ${passwordFiles."${name}"})"}:${builtins.toString cfg.vmailUID}:${builtins.toString cfg.vmailUID}::${cfg.mailDirectory}:/run/current-system/sw/bin/nologin:"
+ (if lib.isString value.quota
then "userdb_quota_rule=*:storage=${value.quota}"
else "")
) cfg.loginAccounts)}
EOF
chmod 600 ${passwdFile}
'';
junkMailboxes = builtins.attrNames (lib.filterAttrs (n: v: v ? "specialUse" && v.specialUse == "Junk") cfg.mailboxes);
@ -137,12 +91,6 @@ let
# The assertion garantees there is exactly one Junk mailbox.
junkMailboxName = if junkMailboxNumber == 1 then builtins.elemAt junkMailboxes 0 else "";
mkLdapSearchScope = scope: (
if scope == "sub" then "subtree"
else if scope == "one" then "onelevel"
else scope
);
in
{
config = with cfg; lib.mkIf enable {
@ -153,13 +101,6 @@ in
}
];
# for sieve-test. Shelling it in on demand usually doesnt' work, as it reads
# the global config and tries to open shared libraries configured in there,
# which are usually not compatible.
environment.systemPackages = [
pkgs.dovecot_pigeonhole
];
services.dovecot2 = {
enable = true;
enableImap = enableImap || enableImapSsl;
@ -176,18 +117,8 @@ in
mailPlugins.globally.enable = lib.optionals cfg.fullTextSearch.enable [ "fts" "fts_xapian" ];
protocols = lib.optional cfg.enableManageSieve "sieve";
pluginSettings = {
sieve = "file:${cfg.sieveDirectory}/%u/scripts;active=${cfg.sieveDirectory}/%u/active.sieve";
sieve_default = "file:${cfg.sieveDirectory}/%u/default.sieve";
sieve_default_name = "default";
};
sieve = {
extensions = [
"fileinto"
];
scripts.after = builtins.toFile "spam.sieve" ''
sieveScripts = {
after = builtins.toFile "spam.sieve" ''
require "fileinto";
if header :is "X-Spam" "Yes" {
@ -195,29 +126,8 @@ in
stop;
}
'';
pipeBins = map lib.getExe [
(pkgs.writeShellScriptBin "sa-learn-ham.sh"
"exec ${pkgs.rspamd}/bin/rspamc -h /run/rspamd/worker-controller.sock learn_ham")
(pkgs.writeShellScriptBin "sa-learn-spam.sh"
"exec ${pkgs.rspamd}/bin/rspamc -h /run/rspamd/worker-controller.sock learn_spam")
];
};
imapsieve.mailbox = [
{
name = junkMailboxName;
causes = [ "COPY" "APPEND" ];
before = ./dovecot/imap_sieve/report-spam.sieve;
}
{
name = "*";
from = junkMailboxName;
causes = [ "COPY" ];
before = ./dovecot/imap_sieve/report-ham.sieve;
}
];
mailboxes = cfg.mailboxes;
extraConfig = ''
@ -307,23 +217,9 @@ in
userdb {
driver = passwd-file
args = ${userdbFile}
default_fields = uid=${builtins.toString cfg.vmailUID} gid=${builtins.toString cfg.vmailUID} home=${cfg.mailDirectory}
args = ${passwdFile}
}
${lib.optionalString cfg.ldap.enable ''
passdb {
driver = ldap
args = ${ldapConfFile}
}
userdb {
driver = ldap
args = ${ldapConfFile}
default_fields = home=/var/vmail/ldap/%u uid=${toString cfg.vmailUID} gid=${toString cfg.vmailUID}
}
''}
service auth {
unix_listener auth {
mode = 0660
@ -339,6 +235,28 @@ in
inbox = yes
}
plugin {
sieve_plugins = sieve_imapsieve sieve_extprograms
sieve = file:${cfg.sieveDirectory}/%u/scripts;active=${cfg.sieveDirectory}/%u/active.sieve
sieve_default = file:${cfg.sieveDirectory}/%u/default.sieve
sieve_default_name = default
# From elsewhere to Spam folder
imapsieve_mailbox1_name = ${junkMailboxName}
imapsieve_mailbox1_causes = COPY
imapsieve_mailbox1_before = file:${stateDir}/imap_sieve/report-spam.sieve
# From Spam folder to elsewhere
imapsieve_mailbox2_name = *
imapsieve_mailbox2_from = ${junkMailboxName}
imapsieve_mailbox2_causes = COPY
imapsieve_mailbox2_before = file:${stateDir}/imap_sieve/report-ham.sieve
sieve_pipe_bin_dir = ${pipeBin}/pipe/bin
sieve_global_extensions = +vnd.dovecot.pipe +vnd.dovecot.environment
}
${lib.optionalString cfg.fullTextSearch.enable ''
plugin {
plugin = fts fts_xapian
@ -367,10 +285,17 @@ in
systemd.services.dovecot2 = {
preStart = ''
${genPasswdScript}
'' + (lib.optionalString cfg.ldap.enable setPwdInLdapConfFile);
rm -rf '${stateDir}/imap_sieve'
mkdir '${stateDir}/imap_sieve'
cp -p "${./dovecot/imap_sieve}"/*.sieve '${stateDir}/imap_sieve/'
for k in "${stateDir}/imap_sieve"/*.sieve ; do
${pkgs.dovecot_pigeonhole}/bin/sievec "$k"
done
chown -R '${dovecot2Cfg.mailUser}:${dovecot2Cfg.mailGroup}' '${stateDir}/imap_sieve'
'';
};
systemd.services.postfix.restartTriggers = [ genPasswdScript ] ++ (lib.optional cfg.ldap.enable [setPwdInLdapConfFile]);
systemd.services.postfix.restartTriggers = [ genPasswdScript ];
systemd.services.dovecot-fts-xapian-optimize = lib.mkIf (cfg.fullTextSearch.enable && cfg.fullTextSearch.maintenance.enable) {
description = "Optimize dovecot indices for fts_xapian";

View file

@ -23,6 +23,6 @@ in
config = with cfg; lib.mkIf enable {
environment.systemPackages = with pkgs; [
dovecot opendkim openssh postfix rspamd
] ++ (if certificateScheme == "selfsigned" then [ openssl ] else []);
] ++ (if certificateScheme == 2 then [ openssl ] else []);
};
}

View file

@ -14,7 +14,7 @@
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>
{ config, lib, ... }:
{ config, pkgs, lib, ... }:
let
cfg = config.mailserver;
@ -31,7 +31,7 @@ in
++ lib.optional enablePop3 110
++ lib.optional enablePop3Ssl 995
++ lib.optional enableManageSieve 4190
++ lib.optional (certificateScheme == "acme-nginx") 80;
++ lib.optional (certificateScheme == 3) 80;
};
};
}

View file

@ -17,26 +17,28 @@
{ config, pkgs, lib, ... }:
with (import ./common.nix { inherit config lib pkgs; });
with (import ./common.nix { inherit config; });
let
cfg = config.mailserver;
acmeRoot = "/var/lib/acme/acme-challenge";
in
{
config = lib.mkIf (cfg.enable && (cfg.certificateScheme == "acme" || cfg.certificateScheme == "acme-nginx")) {
services.nginx = lib.mkIf (cfg.certificateScheme == "acme-nginx") {
config = lib.mkIf (cfg.enable && cfg.certificateScheme == 3) {
services.nginx = {
enable = true;
virtualHosts."${cfg.fqdn}" = {
serverName = cfg.fqdn;
serverAliases = cfg.certificateDomains;
forceSSL = true;
enableACME = true;
acmeRoot = acmeRoot;
};
};
security.acme.certs."${cfg.acmeCertificateName}".reloadServices = [
"postfix.service"
"dovecot2.service"
];
security.acme.certs."${cfg.fqdn}".postRun = ''
systemctl reload postfix
systemctl reload dovecot2
'';
};
}

View file

@ -37,7 +37,6 @@ let
--directory="${cfg.dkimKeyDirectory}"
mv "${cfg.dkimKeyDirectory}/${cfg.dkimSelector}.private" "${dkim_key}"
mv "${cfg.dkimKeyDirectory}/${cfg.dkimSelector}.txt" "${dkim_txt}"
chmod 644 "${dkim_txt}"
echo "Generated key for domain ${dom} selector ${cfg.dkimSelector}"
fi
'';

View file

@ -33,11 +33,6 @@ let
let to = name;
in map (from: {"${from}" = to;}) (value.aliases ++ lib.singleton name))
cfg.loginAccounts));
regex_valiases_postfix = mergeLookupTables (lib.flatten (lib.mapAttrsToList
(name: value:
let to = name;
in map (from: {"${from}" = to;}) value.aliasesRegexp)
cfg.loginAccounts));
# catchAllPostfix :: Map String [String]
catchAllPostfix = mergeLookupTables (lib.flatten (lib.mapAttrsToList
@ -70,10 +65,6 @@ let
content = lookupTableToString (mergeLookupTables [all_valiases_postfix catchAllPostfix]);
in builtins.toFile "valias" content;
regex_valiases_file = let
content = lookupTableToString regex_valiases_postfix;
in builtins.toFile "regex_valias" content;
# denied_recipients_postfix :: [ String ]
denied_recipients_postfix = (map
(acct: "${acct.name} REJECT ${acct.sendOnlyRejectMessage}")
@ -103,7 +94,6 @@ let
# every alias is owned (uniquely) by its user.
# The user's own address is already in all_valiases_postfix.
vaccounts_file = builtins.toFile "vaccounts" (lookupTableToString all_valiases_postfix);
regex_vaccounts_file = builtins.toFile "regex_vaccounts" (lookupTableToString regex_valiases_postfix);
submissionHeaderCleanupRules = pkgs.writeText "submission_header_cleanup_rules" (''
# Removes sensitive headers from mails handed in via the submission port.
@ -133,7 +123,6 @@ let
policyd-spf = pkgs.writeText "policyd-spf.conf" cfg.policydSPFExtraConfig;
mappedFile = name: "hash:/var/lib/postfix/conf/${name}";
mappedRegexFile = name: "pcre:/var/lib/postfix/conf/${name}";
submissionOptions =
{
@ -144,73 +133,21 @@ let
smtpd_sasl_security_options = "noanonymous";
smtpd_sasl_local_domain = "$myhostname";
smtpd_client_restrictions = "permit_sasl_authenticated,reject";
smtpd_sender_login_maps = "hash:/etc/postfix/vaccounts${lib.optionalString cfg.ldap.enable ",ldap:${ldapSenderLoginMapFile}"}${lib.optionalString (regex_valiases_postfix != {}) ",pcre:/etc/postfix/regex_vaccounts"}";
smtpd_sender_login_maps = "hash:/etc/postfix/vaccounts";
smtpd_sender_restrictions = "reject_sender_login_mismatch";
smtpd_recipient_restrictions = "reject_non_fqdn_recipient,reject_unknown_recipient_domain,permit_sasl_authenticated,reject";
cleanup_service_name = "submission-header-cleanup";
};
commonLdapConfig = ''
server_host = ${lib.concatStringsSep " " cfg.ldap.uris}
start_tls = ${if cfg.ldap.startTls then "yes" else "no"}
version = 3
tls_ca_cert_file = ${cfg.ldap.tlsCAFile}
tls_require_cert = yes
search_base = ${cfg.ldap.searchBase}
scope = ${cfg.ldap.searchScope}
bind = yes
bind_dn = ${cfg.ldap.bind.dn}
'';
ldapSenderLoginMap = pkgs.writeText "ldap-sender-login-map.cf" ''
${commonLdapConfig}
query_filter = ${cfg.ldap.postfix.filter}
result_attribute = ${cfg.ldap.postfix.mailAttribute}
'';
ldapSenderLoginMapFile = "/run/postfix/ldap-sender-login-map.cf";
appendPwdInSenderLoginMap = appendLdapBindPwd {
name = "ldap-sender-login-map";
file = ldapSenderLoginMap;
prefix = "bind_pw = ";
passwordFile = cfg.ldap.bind.passwordFile;
destination = ldapSenderLoginMapFile;
};
ldapVirtualMailboxMap = pkgs.writeText "ldap-virtual-mailbox-map.cf" ''
${commonLdapConfig}
query_filter = ${cfg.ldap.postfix.filter}
result_attribute = ${cfg.ldap.postfix.uidAttribute}
'';
ldapVirtualMailboxMapFile = "/run/postfix/ldap-virtual-mailbox-map.cf";
appendPwdInVirtualMailboxMap = appendLdapBindPwd {
name = "ldap-virtual-mailbox-map";
file = ldapVirtualMailboxMap;
prefix = "bind_pw = ";
passwordFile = cfg.ldap.bind.passwordFile;
destination = ldapVirtualMailboxMapFile;
};
in
{
config = with cfg; lib.mkIf enable {
systemd.services.postfix-setup = lib.mkIf cfg.ldap.enable {
preStart = ''
${appendPwdInVirtualMailboxMap}
${appendPwdInSenderLoginMap}
'';
restartTriggers = [ appendPwdInVirtualMailboxMap appendPwdInSenderLoginMap ];
};
services.postfix = {
enable = true;
hostname = "${sendingFqdn}";
networksStyle = "host";
mapFiles."valias" = valiases_file;
mapFiles."regex_valias" = regex_valiases_file;
mapFiles."vaccounts" = vaccounts_file;
mapFiles."regex_vaccounts" = regex_vaccounts_file;
mapFiles."denied_recipients" = denied_recipients_file;
mapFiles."reject_senders" = reject_senders_file;
mapFiles."reject_recipients" = reject_recipients_file;
@ -233,16 +170,7 @@ in
virtual_gid_maps = "static:5000";
virtual_mailbox_base = mailDirectory;
virtual_mailbox_domains = vhosts_file;
virtual_mailbox_maps = [
(mappedFile "valias")
] ++ lib.optionals (cfg.ldap.enable) [
"ldap:${ldapVirtualMailboxMapFile}"
] ++ lib.optionals (regex_valiases_postfix != {}) [
(mappedRegexFile "regex_valias")
];
virtual_alias_maps = lib.mkAfter (lib.optionals (regex_valiases_postfix != {}) [
(mappedRegexFile "regex_valias")
]);
virtual_mailbox_maps = mappedFile "valias";
virtual_transport = "lmtp:unix:/run/dovecot2/dovecot-lmtp";
# Avoid leakage of X-Original-To, X-Delivered-To headers between recipients
lmtp_destination_recipient_limit = "1";
@ -274,6 +202,9 @@ in
# Submission by mail clients is handled in submissionOptions
smtpd_tls_security_level = "may";
# strong might suffice and is computationally less expensive
smtpd_tls_eecdh_grade = "ultra";
# Disable obselete protocols
smtpd_tls_protocols = "TLSv1.3, TLSv1.2, TLSv1.1, !TLSv1, !SSLv2, !SSLv3";
smtp_tls_protocols = "TLSv1.3, TLSv1.2, TLSv1.1, !TLSv1, !SSLv2, !SSLv3";
@ -306,9 +237,6 @@ in
milter_protocol = "6";
milter_mail_macros = "i {mail_addr} {client_addr} {client_name} {auth_type} {auth_authen} {auth_author} {mail_addr} {mail_host} {mail_mailer}";
# Fix for https://www.postfix.org/smtp-smuggling.html
smtpd_forbid_bare_newline = cfg.smtpdForbidBareNewline;
smtpd_forbid_bare_newline_exclusions = "$mynetworks";
};
submissionOptions = submissionOptions;
@ -325,7 +253,7 @@ in
privileged = true;
chroot = false;
command = "spawn";
args = [ "user=nobody" "argv=${pkgs.spf-engine}/bin/policyd-spf" "${policyd-spf}"];
args = [ "user=nobody" "argv=${pkgs.pypolicyd-spf}/bin/policyd-spf" "${policyd-spf}"];
};
"submission-header-cleanup" = {
type = "unix";

View file

@ -30,7 +30,7 @@ in
inherit debug;
locals = {
"milter_headers.conf" = { text = ''
extended_spam_headers = true;
extended_spam_headers = yes;
''; };
"redis.conf" = { text = ''
servers = "${cfg.redis.address}:${toString cfg.redis.port}";
@ -56,17 +56,14 @@ in
# Disable outbound email signing, we use opendkim for this
enabled = false;
''; };
"dmarc.conf" = { text = ''
${lib.optionalString cfg.dmarcReporting.enable ''
reporting {
enabled = true;
email = "${cfg.dmarcReporting.email}";
domain = "${cfg.dmarcReporting.domain}";
org_name = "${cfg.dmarcReporting.organizationName}";
from_name = "${cfg.dmarcReporting.fromName}";
msgid_from = "dmarc-rua";
}''}
''; };
};
overrides = {
"milter_headers.conf" = {
text = ''
extended_spam_headers = true;
'';
};
};
workers.rspamd_proxy = {
@ -101,72 +98,11 @@ in
};
services.redis.servers.rspamd = {
enable = lib.mkDefault true;
port = lib.mkDefault 6380;
};
services.redis.enable = true;
systemd.services.rspamd = {
requires = [ "redis-rspamd.service" ] ++ (lib.optional cfg.virusScanning "clamav-daemon.service");
after = [ "redis-rspamd.service" ] ++ (lib.optional cfg.virusScanning "clamav-daemon.service");
};
systemd.services.rspamd-dmarc-reporter = lib.optionalAttrs (cfg.dmarcReporting.enable) {
# Explicitly select yesterday's date to work around broken
# default behaviour when called without a date.
# https://github.com/rspamd/rspamd/issues/4062
script = ''
${pkgs.rspamd}/bin/rspamadm dmarc_report $(date -d "yesterday" "+%Y%m%d")
'';
serviceConfig = {
User = "${config.services.rspamd.user}";
Group = "${config.services.rspamd.group}";
AmbientCapabilities = [];
CapabilityBoundingSet = "";
DevicePolicy = "closed";
IPAddressAllow = "localhost";
LockPersonality = true;
NoNewPrivileges = true;
PrivateDevices = true;
PrivateMounts = true;
PrivateTmp = true;
PrivateUsers = true;
ProtectClock = true;
ProtectControlGroups = true;
ProtectHome = true;
ProtectHostname = true;
ProtectKernelLogs = true;
ProtectKernelModules = true;
ProtectKernelTunables = true;
ProtectProc = "invisible";
ProcSubset = "pid";
ProtectSystem = "strict";
RemoveIPC = true;
RestrictAddressFamilies = [ "AF_INET" "AF_INET6" ];
RestrictNamespaces = true;
RestrictRealtime = true;
RestrictSUIDSGID = true;
SystemCallArchitectures = "native";
SystemCallFilter = [
"@system-service"
"~@privileged"
];
UMask = "0077";
};
};
systemd.timers.rspamd-dmarc-reporter = lib.optionalAttrs (cfg.dmarcReporting.enable) {
description = "Daily delivery of aggregated DMARC reports";
wantedBy = [
"timers.target"
];
timerConfig = {
OnCalendar = "daily";
Persistent = true;
RandomizedDelaySec = 86400;
FixedRandomDelay = true;
};
requires = [ "redis.service" ] ++ (lib.optional cfg.virusScanning "clamav-daemon.service");
after = [ "redis.service" ] ++ (lib.optional cfg.virusScanning "clamav-daemon.service");
};
systemd.services.postfix = {

View file

@ -19,9 +19,9 @@
let
cfg = config.mailserver;
certificatesDeps =
if cfg.certificateScheme == "manual" then
if cfg.certificateScheme == 1 then
[]
else if cfg.certificateScheme == "selfsigned" then
else if cfg.certificateScheme == 2 then
[ "mailserver-selfsigned-certificate.service" ]
else
[ "acme-finished-${cfg.fqdn}.target" ];
@ -29,7 +29,7 @@ in
{
config = with cfg; lib.mkIf enable {
# Create self signed certificate
systemd.services.mailserver-selfsigned-certificate = lib.mkIf (cfg.certificateScheme == "selfsigned") {
systemd.services.mailserver-selfsigned-certificate = lib.mkIf (cfg.certificateScheme == 2) {
after = [ "local-fs.target" ];
script = ''
# Create certificates if they do not exist yet
@ -64,8 +64,6 @@ in
in ''
# Create mail directory and set permissions. See
# <http://wiki2.dovecot.org/SharedMailboxes/Permissions>.
# Prevent world-readable paths, even temporarily.
umask 007
mkdir -p ${directories}
chgrp "${vmailGroupName}" ${directories}
chmod 02770 ${directories}

View file

@ -34,9 +34,6 @@ let
set -euo pipefail
# Prevent world-readable paths, even temporarily.
umask 007
# Create directory to store user sieve scripts if it doesn't exist
if (! test -d "${sieveDirectory}"); then
mkdir "${sieveDirectory}"

View file

@ -1,82 +0,0 @@
import json
import sys
header = """
# Mailserver options
## `mailserver`
"""
template = """
`````{{option}} {key}
{description}
{type}
{default}
{example}
`````
"""
f = open(sys.argv[1])
options = json.load(f)
groups = ["mailserver.loginAccounts",
"mailserver.certificate",
"mailserver.dkim",
"mailserver.dmarcReporting",
"mailserver.fullTextSearch",
"mailserver.redis",
"mailserver.ldap",
"mailserver.monitoring",
"mailserver.backup",
"mailserver.borgbackup"]
def render_option_value(opt, attr):
if attr in opt:
if isinstance(opt[attr], dict) and '_type' in opt[attr]:
if opt[attr]['_type'] == 'literalExpression':
if '\n' in opt[attr]['text']:
res = '\n```nix\n' + opt[attr]['text'].rstrip('\n') + '\n```'
else:
res = '```{}```'.format(opt[attr]['text'])
elif opt[attr]['_type'] == 'literalMD':
res = opt[attr]['text']
else:
s = str(opt[attr])
if s == "":
res = '`""`'
elif '\n' in s:
res = '\n```\n' + s.rstrip('\n') + '\n```'
else:
res = '```{}```'.format(s)
res = '- ' + attr + ': ' + res
else:
res = ""
return res
def print_option(opt):
if isinstance(opt['description'], dict) and '_type' in opt['description']: # mdDoc
description = opt['description']['text']
else:
description = opt['description']
print(template.format(
key=opt['name'],
description=description or "",
type="- type: ```{}```".format(opt['type']),
default=render_option_value(opt, 'default'),
example=render_option_value(opt, 'example')))
print(header)
for opt in options:
if any([opt['name'].startswith(c) for c in groups]):
continue
print_option(opt)
for c in groups:
print('## `{}`'.format(c))
print()
for opt in options:
if opt['name'].startswith(c):
print_option(opt)

View file

@ -0,0 +1,71 @@
import json
import sys
import re
header = """
Mailserver Options
==================
mailserver
~~~~~~~~~~
"""
template = """
{key}
{line}
{description}
{type}
{default}
"""
f = open(sys.argv[1])
options = json.load(f)
options = {k: v for k, v in options.items()
if k.startswith("mailserver.")}
groups = ["mailserver.loginAccount",
"mailserver.certificate",
"mailserver.dkim",
"mailserver.fullTextSearch",
"mailserver.redis",
"mailserver.monitoring",
"mailserver.backup",
"mailserver.borg"]
def print_option(name, value):
if 'default' in value:
if value['default'] == "":
default = '- Default: ``""``'
else:
default = '- Default: ``{}``'.format(v['default'])
# Some default values contains OUTPUTPATHS which make the
# output not stable across nixpkgs updates.
default = re.sub('/nix/store/[\w.-]*/', '<OUTPUT-PATH>/', default) # noqa
else:
default = ""
print(template.format(
key=name,
line="-"*len(name),
description=value['description'],
type="- Type: ``{}``".format(value['type']),
default=default))
print(header)
for k, v in options.items():
if any([k.startswith(c) for c in groups]):
continue
print_option(k, v)
for c in groups:
print(c)
print("~"*len(c))
print()
for k, v in options.items():
if k.startswith(c):
print_option(k, v)

View file

@ -9,7 +9,7 @@ import time
RETRY = 100
def _send_mail(smtp_host, smtp_port, smtp_username, from_addr, from_pwd, to_addr, subject, starttls):
def _send_mail(smtp_host, smtp_port, from_addr, from_pwd, to_addr, subject, starttls):
print("Sending mail with subject '{}'".format(subject))
message = "\n".join([
"From: {from_addr}",
@ -30,7 +30,7 @@ def _send_mail(smtp_host, smtp_port, smtp_username, from_addr, from_pwd, to_addr
if starttls:
smtp.starttls()
if from_pwd is not None:
smtp.login(smtp_username or from_addr, from_pwd)
smtp.login(from_addr, from_pwd)
smtp.sendmail(from_addr, [to_addr], message)
return
@ -141,7 +141,6 @@ def send_and_read(args):
_send_mail(smtp_host=args.smtp_host,
smtp_port=args.smtp_port,
smtp_username=args.smtp_username,
from_addr=args.from_addr,
from_pwd=src_pwd,
to_addr=args.to_addr,
@ -172,7 +171,6 @@ parser_send_and_read = subparsers.add_parser('send-and-read', description="Send
parser_send_and_read.add_argument('--smtp-host', type=str)
parser_send_and_read.add_argument('--smtp-port', type=str, default=25)
parser_send_and_read.add_argument('--smtp-starttls', action='store_true')
parser_send_and_read.add_argument('--smtp-username', type=str, default='', help="username used for smtp login. If not specified, the from-addr value is used")
parser_send_and_read.add_argument('--from-addr', type=str)
parser_send_and_read.add_argument('--imap-host', required=True, type=str)
parser_send_and_read.add_argument('--imap-port', type=str, default=993)

View file

@ -1,10 +1 @@
(import
(
let lock = builtins.fromJSON (builtins.readFile ./flake.lock); in
fetchTarball {
url = "https://github.com/edolstra/flake-compat/archive/${lock.nodes.flake-compat.locked.rev}.tar.gz";
sha256 = lock.nodes.flake-compat.locked.narHash;
}
)
{ src = ./.; }
).shellNix
(import (builtins.fetchGit "https://github.com/edolstra/flake-compat") { src = ./.; }).shellNix

View file

@ -189,10 +189,10 @@ pkgs.nixosTest {
# TODO put this blocking into the systemd units? I am not sure if rspamd already waits for the clamd socket.
server.wait_until_succeeds(
"set +e; timeout 1 ${nodes.server.nixpkgs.pkgs.netcat}/bin/nc -U /run/rspamd/rspamd-milter.sock < /dev/null; [ $? -eq 124 ]"
"set +e; timeout 1 ${nodes.server.pkgs.netcat}/bin/nc -U /run/rspamd/rspamd-milter.sock < /dev/null; [ $? -eq 124 ]"
)
server.wait_until_succeeds(
"set +e; timeout 1 ${nodes.server.nixpkgs.pkgs.netcat}/bin/nc -U /run/clamav/clamd.ctl < /dev/null; [ $? -eq 124 ]"
"set +e; timeout 1 ${nodes.server.pkgs.netcat}/bin/nc -U /run/clamav/clamd.ctl < /dev/null; [ $? -eq 124 ]"
)
client.execute("cp -p /etc/root/.* ~/")

View file

@ -43,11 +43,6 @@ pkgs.nixosTest {
domains = [ "example.com" "example2.com" ];
rewriteMessageId = true;
dkimKeyBits = 1535;
dmarcReporting = {
enable = true;
domain = "example.com";
organizationName = "ACME Corp";
};
loginAccounts = {
"user1@example.com" = {
@ -350,7 +345,7 @@ pkgs.nixosTest {
# TODO put this blocking into the systemd units?
server.wait_until_succeeds(
"set +e; timeout 1 ${nodes.server.nixpkgs.pkgs.netcat}/bin/nc -U /run/rspamd/rspamd-milter.sock < /dev/null; [ $? -eq 124 ]"
"set +e; timeout 1 ${nodes.server.pkgs.netcat}/bin/nc -U /run/rspamd/rspamd-milter.sock < /dev/null; [ $? -eq 124 ]"
)
client.execute("cp -p /etc/root/.* ~/")
@ -494,21 +489,18 @@ pkgs.nixosTest {
client.fail("search Junk a >&2")
# check that search really goes through the indexer
server.succeed(
"journalctl -u dovecot2 | grep -E 'indexer-worker.* Done indexing .INBOX.' >&2"
"journalctl -u dovecot2 | grep -E 'indexer-worker.* Mailbox INBOX: Mailbox opened because: indexing' >&2"
)
# check that Junk is not indexed
server.fail("journalctl -u dovecot2 | grep 'indexer-worker' | grep -i 'JUNK' >&2")
with subtest("dmarc reporting"):
server.systemctl("start rspamd-dmarc-reporter.service")
with subtest("no warnings or errors"):
server.fail("journalctl -u postfix | grep -i error >&2")
server.fail("journalctl -u postfix | grep -i warning >&2")
server.fail("journalctl -u dovecot2 | grep -i error >&2")
# harmless ? https://dovecot.org/pipermail/dovecot/2020-August/119575.html
server.fail(
"journalctl -u dovecot2 |grep -v 'Expunged message reappeared, giving a new UID'| grep -v 'FTS Xapian: Box is empty' | grep -i warning >&2"
"journalctl -u dovecot2 |grep -v 'Expunged message reappeared, giving a new UID'| grep -i warning >&2"
)
'';
}

View file

@ -29,8 +29,8 @@ let
hashPassword = password: pkgs.runCommand
"password-${password}-hashed"
{ buildInputs = [ pkgs.mkpasswd ]; inherit password; } ''
mkpasswd -sm bcrypt <<<"$password" > $out
{ buildInputs = [ pkgs.apacheHttpd ]; } ''
htpasswd -nbB "" "${password}" | cut -d: -f2 > $out
'';
hashedPasswordFile = hashPassword "my-password";
@ -55,7 +55,7 @@ pkgs.nixosTest {
mailserver = {
enable = true;
fqdn = "mail.example.com";
domains = [ "example.com" "domain.com" ];
domains = [ "example.com" ];
localDnsResolver = false;
loginAccounts = {
@ -64,7 +64,6 @@ pkgs.nixosTest {
};
"user2@example.com" = {
hashedPasswordFile = hashedPasswordFile;
aliasesRegexp = [''/^user2.*@domain\.com$/''];
};
"send-only@example.com" = {
hashedPasswordFile = hashPassword "send-only";
@ -127,46 +126,6 @@ pkgs.nixosTest {
)
)
with subtest("regex email alias are received"):
# A mail sent to user2-regex-alias@domain.com is in the user2@example.com mailbox
machine.succeed(
" ".join(
[
"mail-check send-and-read",
"--smtp-port 587",
"--smtp-starttls",
"--smtp-host localhost",
"--imap-host localhost",
"--imap-username user2@example.com",
"--from-addr user1@example.com",
"--to-addr user2-regex-alias@domain.com",
"--src-password-file ${passwordFile}",
"--dst-password-file ${passwordFile}",
"--ignore-dkim-spf",
]
)
)
with subtest("user can send from regex email alias"):
# A mail sent from user2-regex-alias@domain.com, using user2@example.com credentials is received
machine.succeed(
" ".join(
[
"mail-check send-and-read",
"--smtp-port 587",
"--smtp-starttls",
"--smtp-host localhost",
"--imap-host localhost",
"--smtp-username user2@example.com",
"--from-addr user2-regex-alias@domain.com",
"--to-addr user1@example.com",
"--src-password-file ${passwordFile}",
"--dst-password-file ${passwordFile}",
"--ignore-dkim-spf",
]
)
)
with subtest("vmail gid is set correctly"):
machine.succeed("getent group vmail | grep 5000")
@ -177,7 +136,7 @@ pkgs.nixosTest {
"set +e; timeout 1 ${pkgs.netcat}/bin/nc -U /run/rspamd/rspamd-milter.sock < /dev/null; [ $? -eq 124 ]"
)
machine.succeed(
"cat ${sendMail} | ${pkgs.netcat-gnu}/bin/nc localhost 25 | grep -q '554 5.5.0 Error'"
"cat ${sendMail} | ${pkgs.netcat-gnu}/bin/nc localhost 25 | grep -q 'This account cannot receive emails'"
)
with subtest("rspamd controller serves web ui"):

View file

@ -1,183 +0,0 @@
{ pkgs ? import <nixpkgs> {}
, ...
}:
let
bindPassword = "unsafegibberish";
alicePassword = "testalice";
bobPassword = "testbob";
in
pkgs.nixosTest {
name = "ldap";
nodes = {
machine = { config, pkgs, ... }: {
imports = [
./../default.nix
./lib/config.nix
];
virtualisation.memorySize = 1024;
services.openssh = {
enable = true;
permitRootLogin = "yes";
};
environment.systemPackages = [
(pkgs.writeScriptBin "mail-check" ''
${pkgs.python3}/bin/python ${../scripts/mail-check.py} $@
'')];
environment.etc.bind-password.text = bindPassword;
services.openldap = {
enable = true;
settings = {
children = {
"cn=schema".includes = [
"${pkgs.openldap}/etc/schema/core.ldif"
"${pkgs.openldap}/etc/schema/cosine.ldif"
"${pkgs.openldap}/etc/schema/inetorgperson.ldif"
"${pkgs.openldap}/etc/schema/nis.ldif"
];
"olcDatabase={1}mdb" = {
attrs = {
objectClass = [
"olcDatabaseConfig"
"olcMdbConfig"
];
olcDatabase = "{1}mdb";
olcDbDirectory = "/var/lib/openldap/example";
olcSuffix = "dc=example";
};
};
};
};
declarativeContents."dc=example" = ''
dn: dc=example
objectClass: domain
dc: example
dn: cn=mail,dc=example
objectClass: organizationalRole
objectClass: simpleSecurityObject
objectClass: top
cn: mail
userPassword: ${bindPassword}
dn: ou=users,dc=example
objectClass: organizationalUnit
ou: users
dn: cn=alice,ou=users,dc=example
objectClass: inetOrgPerson
cn: alice
sn: Foo
mail: alice@example.com
userPassword: ${alicePassword}
dn: cn=bob,ou=users,dc=example
objectClass: inetOrgPerson
cn: bob
sn: Bar
mail: bob@example.com
userPassword: ${bobPassword}
'';
};
mailserver = {
enable = true;
fqdn = "mail.example.com";
domains = [ "example.com" ];
localDnsResolver = false;
ldap = {
enable = true;
uris = [
"ldap://"
];
bind = {
dn = "cn=mail,dc=example";
passwordFile = "/etc/bind-password";
};
searchBase = "ou=users,dc=example";
searchScope = "sub";
};
vmailGroupName = "vmail";
vmailUID = 5000;
enableImap = false;
};
};
};
testScript = ''
import sys
import re
machine.start()
machine.wait_for_unit("multi-user.target")
# This function retrieves the ldap table file from a postconf
# command.
# A key lookup is achived and the returned value is compared
# to the expected value.
def test_lookup(postconf_cmdline, key, expected):
conf = machine.succeed(postconf_cmdline).rstrip()
ldap_table_path = re.match('.* =.*ldap:(.*)', conf).group(1)
value = machine.succeed(f"postmap -q {key} ldap:{ldap_table_path}").rstrip()
try:
assert value == expected
except AssertionError:
print(f"Expected {conf} lookup for key '{key}' to return '{expected}, but got '{value}'", file=sys.stderr)
raise
with subtest("Test postmap lookups"):
test_lookup("postconf virtual_mailbox_maps", "alice@example.com", "alice@example.com")
test_lookup("postconf -P submission/inet/smtpd_sender_login_maps", "alice@example.com", "alice@example.com")
test_lookup("postconf virtual_mailbox_maps", "bob@example.com", "bob@example.com")
test_lookup("postconf -P submission/inet/smtpd_sender_login_maps", "bob@example.com", "bob@example.com")
with subtest("Test doveadm lookups"):
machine.succeed("doveadm user -u alice@example.com")
machine.succeed("doveadm user -u bob@example.com")
with subtest("Files containing secrets are only readable by root"):
machine.succeed("ls -l /run/postfix/*.cf | grep -e '-rw------- 1 root root'")
machine.succeed("ls -l /run/dovecot2/dovecot-ldap.conf.ext | grep -e '-rw------- 1 root root'")
with subtest("Test account/mail address binding"):
machine.fail(" ".join([
"mail-check send-and-read",
"--smtp-port 587",
"--smtp-starttls",
"--smtp-host localhost",
"--smtp-username alice@example.com",
"--imap-host localhost",
"--imap-username bob@example.com",
"--from-addr bob@example.com",
"--to-addr aliceb@example.com",
"--src-password-file <(echo '${alicePassword}')",
"--dst-password-file <(echo '${bobPassword}')",
"--ignore-dkim-spf"
]))
machine.succeed("journalctl -u postfix | grep -q 'Sender address rejected: not owned by user alice@example.com'")
with subtest("Test mail delivery"):
machine.succeed(" ".join([
"mail-check send-and-read",
"--smtp-port 587",
"--smtp-starttls",
"--smtp-host localhost",
"--smtp-username alice@example.com",
"--imap-host localhost",
"--imap-username bob@example.com",
"--from-addr alice@example.com",
"--to-addr bob@example.com",
"--src-password-file <(echo '${alicePassword}')",
"--dst-password-file <(echo '${bobPassword}')",
"--ignore-dkim-spf"
]))
'';
}

View file

@ -14,9 +14,9 @@
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>
import <nixpkgs/nixos/tests/make-test-python.nix> {
import <nixpkgs/nixos/tests/make-test.nix> {
nodes.machine =
machine =
{ config, pkgs, ... }:
{
imports = [
@ -26,6 +26,6 @@ import <nixpkgs/nixos/tests/make-test-python.nix> {
testScript =
''
machine.wait_for_unit("multi-user.target");
$machine->waitForUnit("multi-user.target");
'';
}

View file

@ -5,9 +5,9 @@
let
hashPassword = password: pkgs.runCommand
"password-${password}-hashed"
{ buildInputs = [ pkgs.mkpasswd ]; inherit password; }
{ buildInputs = [ pkgs.apacheHttpd ]; }
''
mkpasswd -sm bcrypt <<<"$password" > $out
htpasswd -nbB "" "${password}" | cut -d: -f2 > $out
'';
password = pkgs.writeText "password" "password";
@ -30,8 +30,6 @@ let
};
services.dnsmasq = {
enable = true;
# Fixme: once nixos-22.11 has been removed, could be replaced by
# settings.mx-host = [ "domain1.com,domain1,10" "domain2.com,domain2,10" ];
extraConfig = ''
mx-host=domain1.com,domain1,10
mx-host=domain2.com,domain2,10