Merge branch 'cleanup' into 'master'

treewide: remove global `with lib` and overly broad `with cfg`

See merge request simple-nixos-mailserver/nixos-mailserver!416
This commit is contained in:
Martin Weinelt 2025-06-15 03:48:33 +00:00
commit 67b0a7e946
8 changed files with 723 additions and 721 deletions

View file

@ -21,9 +21,20 @@
...
}:
with lib;
let
inherit (lib)
literalExpression
literalMD
mkDefault
mkEnableOption
mkOption
mkOptionType
mkRemovedOptionModule
mkRenamedOptionModule
types
warn
;
cfg = config.mailserver;
in
{
@ -269,7 +280,7 @@ in
tlsCAFile = mkOption {
type = types.path;
default = "${pkgs.cacert}/etc/ssl/certs/ca-bundle.crt";
defaultText = lib.literalMD "see [source](https://gitlab.com/simple-nixos-mailserver/nixos-mailserver/-/blob/master/default.nix)";
defaultText = literalMD "see [source](https://gitlab.com/simple-nixos-mailserver/nixos-mailserver/-/blob/master/default.nix)";
description = ''
Certifificate trust anchors used to verify the LDAP server certificate.
'';
@ -1064,7 +1075,7 @@ in
type = types.str;
# read the default from nixos' redis module
default = config.services.redis.servers.rspamd.unixSocket;
defaultText = lib.literalExpression "config.services.redis.servers.rspamd.unixSocket";
defaultText = literalExpression "config.services.redis.servers.rspamd.unixSocket";
description = ''
Path, IP address or hostname that Rspamd should use to contact Redis.
'';
@ -1073,7 +1084,7 @@ in
port = mkOption {
type = with types; nullOr port;
default = null;
example = lib.literalExpression "config.services.redis.servers.rspamd.port";
example = literalExpression "config.services.redis.servers.rspamd.port";
description = ''
Port that Rspamd should use to contact Redis.
'';
@ -1082,7 +1093,7 @@ in
password = mkOption {
type = types.nullOr types.str;
default = config.services.redis.servers.rspamd.requirePass;
defaultText = lib.literalExpression "config.services.redis.servers.rspamd.requirePass";
defaultText = literalExpression "config.services.redis.servers.rspamd.requirePass";
description = ''
Password that rspamd should use to contact redis, or null if not required.
'';
@ -1102,7 +1113,7 @@ in
sendingFqdn = mkOption {
type = types.str;
default = cfg.fqdn;
defaultText = lib.literalMD "{option}`mailserver.fqdn`";
defaultText = literalMD "{option}`mailserver.fqdn`";
example = "myserver.example.com";
description = ''
The fully qualified domain name of the mail server used to
@ -1178,7 +1189,7 @@ in
start program = "${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)";
defaultText = 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 ...'.
@ -1287,7 +1298,7 @@ in
locations = mkOption {
type = types.listOf types.path;
default = [ cfg.mailDirectory ];
defaultText = lib.literalExpression "[ config.mailserver.mailDirectory ]";
defaultText = literalExpression "[ config.mailserver.mailDirectory ]";
description = "The locations that are to be backed up by borg.";
};
@ -1388,29 +1399,29 @@ in
};
imports = [
(lib.mkRemovedOptionModule [ "mailserver" "fullTextSearch" "maintenance" "enable" ] ''
(mkRemovedOptionModule [ "mailserver" "fullTextSearch" "maintenance" "enable" ] ''
This option is not needed for fts-flatcurve
'')
(lib.mkRemovedOptionModule [ "mailserver" "fullTextSearch" "maintenance" "onCalendar" ] ''
(mkRemovedOptionModule [ "mailserver" "fullTextSearch" "maintenance" "onCalendar" ] ''
This option is not needed for fts-flatcurve
'')
(lib.mkRemovedOptionModule [ "mailserver" "fullTextSearch" "maintenance" "randomizedDelaySec" ] ''
(mkRemovedOptionModule [ "mailserver" "fullTextSearch" "maintenance" "randomizedDelaySec" ] ''
This option is not needed for fts-flatcurve
'')
(lib.mkRemovedOptionModule [ "mailserver" "fullTextSearch" "minSize" ] ''
(mkRemovedOptionModule [ "mailserver" "fullTextSearch" "minSize" ] ''
This option is not supported by fts-flatcurve
'')
(lib.mkRemovedOptionModule [ "mailserver" "fullTextSearch" "maxSize" ] ''
(mkRemovedOptionModule [ "mailserver" "fullTextSearch" "maxSize" ] ''
This option is not needed since fts-xapian 1.8.3
'')
(lib.mkRemovedOptionModule [ "mailserver" "fullTextSearch" "indexAttachments" ] ''
(mkRemovedOptionModule [ "mailserver" "fullTextSearch" "indexAttachments" ] ''
Text attachments are always indexed since fts-xapian 1.4.8
'')
(lib.mkRenamedOptionModule
(mkRenamedOptionModule
[ "mailserver" "rebootAfterKernelUpgrade" "enable" ]
[ "system" "autoUpgrade" "allowReboot" ]
)
(lib.mkRemovedOptionModule [ "mailserver" "rebootAfterKernelUpgrade" "method" ] ''
(mkRemovedOptionModule [ "mailserver" "rebootAfterKernelUpgrade" "method" ] ''
Use `system.autoUpgrade` instead.
'')
./mail-server/assertions.nix
@ -1427,17 +1438,17 @@ in
./mail-server/rspamd.nix
./mail-server/nginx.nix
./mail-server/kresd.nix
(lib.mkRemovedOptionModule [ "mailserver" "policydSPFExtraConfig" ] ''
(mkRemovedOptionModule [ "mailserver" "policydSPFExtraConfig" ] ''
SPF checking has been migrated to Rspamd, which makes this config redundant. Please look into the rspamd config to migrate your settings.
It may be that they are redundant and are already configured in rspamd like for skip_addresses.
'')
(lib.mkRemovedOptionModule [ "mailserver" "dkimHeaderCanonicalization" ] ''
(mkRemovedOptionModule [ "mailserver" "dkimHeaderCanonicalization" ] ''
DKIM signing has been migrated to Rspamd, which always uses relaxed canonicalization.
'')
(lib.mkRemovedOptionModule [ "mailserver" "dkimBodyCanonicalization" ] ''
(mkRemovedOptionModule [ "mailserver" "dkimBodyCanonicalization" ] ''
DKIM signing has been migrated to Rspamd, which always uses relaxed canonicalization.
'')
(lib.mkRemovedOptionModule [ "mailserver" "smtpdForbidBareNewline" ] ''
(mkRemovedOptionModule [ "mailserver" "smtpdForbidBareNewline" ] ''
The workaround for the SMTP Smuggling attack is default enabled in Postfix >3.9. Use `services.postfix.config.smtpd_forbid_bare_newline` if you need to deviate from its default.
'')
];

View file

@ -163,283 +163,281 @@ let
in
{
config =
with cfg;
lib.mkIf enable {
assertions = [
config = lib.mkIf cfg.enable {
assertions = [
{
assertion = junkMailboxNumber == 1;
message = "nixos-mailserver requires exactly one dovecot mailbox with the 'special use' flag set to 'Junk' (${builtins.toString junkMailboxNumber} have been found)";
}
];
warnings =
lib.optional
(
(builtins.length cfg.fullTextSearch.languages > 1)
&& (builtins.elem "stopwords" cfg.fullTextSearch.filters)
)
''
Using stopwords in `mailserver.fullTextSearch.filters` with multiple
languages in `mailserver.fullTextSearch.languages` configured WILL
cause some searches to fail.
The recommended solution is to NOT use the stopword filter when
multiple languages are present in the configuration.
'';
# for sieve-test. Shelling it in on demand usually doesnt' work, as it reads
# the global config and tries to open shared libraries configured in there,
# which are usually not compatible.
environment.systemPackages = [
pkgs.dovecot_pigeonhole
] ++ lib.optional cfg.fullTextSearch.enable pkgs.dovecot-fts-flatcurve;
# For compatibility with python imaplib
environment.etc."dovecot/modules".source = "/run/current-system/sw/lib/dovecot/modules";
services.dovecot2 = {
enable = true;
enableImap = cfg.enableImap || cfg.enableImapSsl;
enablePop3 = cfg.enablePop3 || cfg.enablePop3Ssl;
enablePAM = false;
enableQuota = true;
mailGroup = cfg.vmailGroupName;
mailUser = cfg.vmailUserName;
mailLocation = dovecotMaildir;
sslServerCert = certificatePath;
sslServerKey = keyPath;
enableDHE = lib.mkDefault false;
enableLmtp = true;
mailPlugins.globally.enable = lib.optionals cfg.fullTextSearch.enable [
"fts"
"fts_flatcurve"
];
protocols = lib.optional cfg.enableManageSieve "sieve";
pluginSettings = {
sieve = "file:${cfg.sieveDirectory}/%{user}/scripts;active=${cfg.sieveDirectory}/%{user}/active.sieve";
sieve_default = "file:${cfg.sieveDirectory}/%{user}/default.sieve";
sieve_default_name = "default";
} // (lib.optionalAttrs cfg.fullTextSearch.enable ftsPluginSettings);
sieve = {
extensions = [
"fileinto"
];
scripts.after = builtins.toFile "spam.sieve" ''
require "fileinto";
if header :is "X-Spam" "Yes" {
fileinto "${junkMailboxName}";
stop;
}
'';
pipeBins = map lib.getExe [
(pkgs.writeShellScriptBin "rspamd-learn-ham.sh" "exec ${pkgs.rspamd}/bin/rspamc -h /run/rspamd/worker-controller.sock learn_ham")
(pkgs.writeShellScriptBin "rspamd-learn-spam.sh" "exec ${pkgs.rspamd}/bin/rspamc -h /run/rspamd/worker-controller.sock learn_spam")
];
};
imapsieve.mailbox = [
{
assertion = junkMailboxNumber == 1;
message = "nixos-mailserver requires exactly one dovecot mailbox with the 'special use' flag set to 'Junk' (${builtins.toString junkMailboxNumber} have been found)";
name = junkMailboxName;
causes = [
"COPY"
"APPEND"
];
before = ./dovecot/imap_sieve/report-spam.sieve;
}
{
name = "*";
from = junkMailboxName;
causes = [ "COPY" ];
before = ./dovecot/imap_sieve/report-ham.sieve;
}
];
warnings =
lib.optional
(
(builtins.length cfg.fullTextSearch.languages > 1)
&& (builtins.elem "stopwords" cfg.fullTextSearch.filters)
)
''
Using stopwords in `mailserver.fullTextSearch.filters` with multiple
languages in `mailserver.fullTextSearch.languages` configured WILL
cause some searches to fail.
mailboxes = cfg.mailboxes;
The recommended solution is to NOT use the stopword filter when
multiple languages are present in the configuration.
'';
extraConfig = ''
#Extra Config
${lib.optionalString cfg.debug ''
mail_debug = yes
auth_debug = yes
verbose_ssl = yes
''}
# for sieve-test. Shelling it in on demand usually doesnt' work, as it reads
# the global config and tries to open shared libraries configured in there,
# which are usually not compatible.
environment.systemPackages = [
pkgs.dovecot_pigeonhole
] ++ lib.optional cfg.fullTextSearch.enable pkgs.dovecot-fts-flatcurve;
# For compatibility with python imaplib
environment.etc."dovecot/modules".source = "/run/current-system/sw/lib/dovecot/modules";
services.dovecot2 = {
enable = true;
enableImap = enableImap || enableImapSsl;
enablePop3 = enablePop3 || enablePop3Ssl;
enablePAM = false;
enableQuota = true;
mailGroup = vmailGroupName;
mailUser = vmailUserName;
mailLocation = dovecotMaildir;
sslServerCert = certificatePath;
sslServerKey = keyPath;
enableDHE = lib.mkDefault false;
enableLmtp = true;
mailPlugins.globally.enable = lib.optionals cfg.fullTextSearch.enable [
"fts"
"fts_flatcurve"
];
protocols = lib.optional cfg.enableManageSieve "sieve";
pluginSettings = {
sieve = "file:${cfg.sieveDirectory}/%{user}/scripts;active=${cfg.sieveDirectory}/%{user}/active.sieve";
sieve_default = "file:${cfg.sieveDirectory}/%{user}/default.sieve";
sieve_default_name = "default";
} // (lib.optionalAttrs cfg.fullTextSearch.enable ftsPluginSettings);
sieve = {
extensions = [
"fileinto"
];
scripts.after = builtins.toFile "spam.sieve" ''
require "fileinto";
if header :is "X-Spam" "Yes" {
fileinto "${junkMailboxName}";
stop;
}
'';
pipeBins = map lib.getExe [
(pkgs.writeShellScriptBin "rspamd-learn-ham.sh" "exec ${pkgs.rspamd}/bin/rspamc -h /run/rspamd/worker-controller.sock learn_ham")
(pkgs.writeShellScriptBin "rspamd-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 = ''
#Extra Config
${lib.optionalString debug ''
mail_debug = yes
auth_debug = yes
verbose_ssl = yes
''}
${lib.optionalString (cfg.enableImap || cfg.enableImapSsl) ''
service imap-login {
inet_listener imap {
${
if cfg.enableImap then
''
port = 143
''
else
''
# see https://dovecot.org/pipermail/dovecot/2010-March/047479.html
port = 0
''
}
}
inet_listener imaps {
${
if cfg.enableImapSsl then
''
port = 993
ssl = yes
''
else
''
# see https://dovecot.org/pipermail/dovecot/2010-March/047479.html
port = 0
''
}
${lib.optionalString (cfg.enableImap || cfg.enableImapSsl) ''
service imap-login {
inet_listener imap {
${
if cfg.enableImap then
''
port = 143
''
else
''
# see https://dovecot.org/pipermail/dovecot/2010-March/047479.html
port = 0
''
}
}
''}
${lib.optionalString (cfg.enablePop3 || cfg.enablePop3Ssl) ''
service pop3-login {
inet_listener pop3 {
${
if cfg.enablePop3 then
''
port = 110
''
else
''
# see https://dovecot.org/pipermail/dovecot/2010-March/047479.html
port = 0
''
}
}
inet_listener pop3s {
${
if cfg.enablePop3Ssl then
''
port = 995
ssl = yes
''
else
''
# see https://dovecot.org/pipermail/dovecot/2010-March/047479.html
port = 0
''
}
inet_listener imaps {
${
if cfg.enableImapSsl then
''
port = 993
ssl = yes
''
else
''
# see https://dovecot.org/pipermail/dovecot/2010-March/047479.html
port = 0
''
}
}
''}
protocol imap {
mail_max_userip_connections = ${toString cfg.maxConnectionsPerUser}
mail_plugins = $mail_plugins imap_sieve
}
service imap {
vsz_limit = ${builtins.toString cfg.imapMemoryLimit} MB
}
protocol pop3 {
mail_max_userip_connections = ${toString cfg.maxConnectionsPerUser}
}
mail_access_groups = ${vmailGroupName}
# https://ssl-config.mozilla.org/#server=dovecot&version=2.3.21&config=intermediate&openssl=3.4.1&guideline=5.7
ssl = required
ssl_min_protocol = TLSv1.2
ssl_prefer_server_ciphers = no
ssl_curve_list = X25519:prime256v1:secp384r1
service lmtp {
unix_listener dovecot-lmtp {
group = ${postfixCfg.group}
mode = 0600
user = ${postfixCfg.user}
''}
${lib.optionalString (cfg.enablePop3 || cfg.enablePop3Ssl) ''
service pop3-login {
inet_listener pop3 {
${
if cfg.enablePop3 then
''
port = 110
''
else
''
# see https://dovecot.org/pipermail/dovecot/2010-March/047479.html
port = 0
''
}
}
vsz_limit = ${builtins.toString cfg.lmtpMemoryLimit} MB
}
service quota-status {
inet_listener {
port = 0
inet_listener pop3s {
${
if cfg.enablePop3Ssl then
''
port = 995
ssl = yes
''
else
''
# see https://dovecot.org/pipermail/dovecot/2010-March/047479.html
port = 0
''
}
}
unix_listener quota-status {
user = postfix
}
vsz_limit = ${builtins.toString cfg.quotaStatusMemoryLimit} MB
}
''}
recipient_delimiter = ${cfg.recipientDelimiter}
lmtp_save_to_detail_mailbox = ${cfg.lmtpSaveToDetailMailbox}
protocol imap {
mail_max_userip_connections = ${toString cfg.maxConnectionsPerUser}
mail_plugins = $mail_plugins imap_sieve
}
protocol lmtp {
mail_plugins = $mail_plugins sieve
service imap {
vsz_limit = ${builtins.toString cfg.imapMemoryLimit} MB
}
protocol pop3 {
mail_max_userip_connections = ${toString cfg.maxConnectionsPerUser}
}
mail_access_groups = ${cfg.vmailGroupName}
# https://ssl-config.mozilla.org/#server=dovecot&version=2.3.21&config=intermediate&openssl=3.4.1&guideline=5.7
ssl = required
ssl_min_protocol = TLSv1.2
ssl_prefer_server_ciphers = no
ssl_curve_list = X25519:prime256v1:secp384r1
service lmtp {
unix_listener dovecot-lmtp {
group = ${postfixCfg.group}
mode = 0600
user = ${postfixCfg.user}
}
vsz_limit = ${builtins.toString cfg.lmtpMemoryLimit} MB
}
service quota-status {
inet_listener {
port = 0
}
unix_listener quota-status {
user = postfix
}
vsz_limit = ${builtins.toString cfg.quotaStatusMemoryLimit} MB
}
recipient_delimiter = ${cfg.recipientDelimiter}
lmtp_save_to_detail_mailbox = ${cfg.lmtpSaveToDetailMailbox}
protocol lmtp {
mail_plugins = $mail_plugins sieve
}
passdb {
driver = passwd-file
args = ${passwdFile}
}
userdb {
driver = passwd-file
args = ${userdbFile}
default_fields = uid=${builtins.toString cfg.vmailUID} gid=${builtins.toString cfg.vmailUID} home=${cfg.mailDirectory}
}
${lib.optionalString cfg.ldap.enable ''
passdb {
driver = passwd-file
args = ${passwdFile}
driver = ldap
args = ${ldapConfFile}
}
userdb {
driver = passwd-file
args = ${userdbFile}
default_fields = uid=${builtins.toString cfg.vmailUID} gid=${builtins.toString cfg.vmailUID} home=${cfg.mailDirectory}
driver = ldap
args = ${ldapConfFile}
default_fields = home=${cfg.mailDirectory}/ldap/%{user} uid=${toString cfg.vmailUID} gid=${toString cfg.vmailUID}
}
''}
${lib.optionalString cfg.ldap.enable ''
passdb {
driver = ldap
args = ${ldapConfFile}
}
userdb {
driver = ldap
args = ${ldapConfFile}
default_fields = home=${cfg.mailDirectory}/ldap/%{user} uid=${toString cfg.vmailUID} gid=${toString cfg.vmailUID}
}
''}
service auth {
unix_listener auth {
mode = 0660
user = ${postfixCfg.user}
group = ${postfixCfg.group}
}
service auth {
unix_listener auth {
mode = 0660
user = ${postfixCfg.user}
group = ${postfixCfg.group}
}
}
auth_mechanisms = plain login
auth_mechanisms = plain login
namespace inbox {
separator = ${cfg.hierarchySeparator}
inbox = yes
}
namespace inbox {
separator = ${cfg.hierarchySeparator}
inbox = yes
}
service indexer-worker {
${lib.optionalString (cfg.fullTextSearch.memoryLimit != null) ''
vsz_limit = ${toString (cfg.fullTextSearch.memoryLimit * 1024 * 1024)}
''}
}
service indexer-worker {
${lib.optionalString (cfg.fullTextSearch.memoryLimit != null) ''
vsz_limit = ${toString (cfg.fullTextSearch.memoryLimit * 1024 * 1024)}
''}
}
lda_mailbox_autosubscribe = yes
lda_mailbox_autocreate = yes
'';
};
systemd.services.dovecot2 = {
preStart =
''
${genPasswdScript}
''
+ (lib.optionalString cfg.ldap.enable setPwdInLdapConfFile);
};
systemd.services.postfix.restartTriggers = [
genPasswdScript
] ++ (lib.optional cfg.ldap.enable [ setPwdInLdapConfFile ]);
lda_mailbox_autosubscribe = yes
lda_mailbox_autocreate = yes
'';
};
systemd.services.dovecot2 = {
preStart =
''
${genPasswdScript}
''
+ (lib.optionalString cfg.ldap.enable setPwdInLdapConfFile);
};
systemd.services.postfix.restartTriggers = [
genPasswdScript
] ++ (lib.optional cfg.ldap.enable [ setPwdInLdapConfFile ]);
};
}

View file

@ -25,17 +25,15 @@ let
cfg = config.mailserver;
in
{
config =
with cfg;
lib.mkIf enable {
environment.systemPackages =
with pkgs;
[
dovecot
openssh
postfix
rspamd
]
++ (if certificateScheme == "selfsigned" then [ openssl ] else [ ]);
};
config = lib.mkIf cfg.enable {
environment.systemPackages =
with pkgs;
[
dovecot
openssh
postfix
rspamd
]
++ (if cfg.certificateScheme == "selfsigned" then [ openssl ] else [ ]);
};
}

View file

@ -20,21 +20,19 @@ let
cfg = config.mailserver;
in
{
config =
with cfg;
lib.mkIf (enable && openFirewall) {
config = lib.mkIf (cfg.enable && cfg.openFirewall) {
networking.firewall = {
allowedTCPPorts =
[ 25 ]
++ lib.optional enableSubmission 587
++ lib.optional enableSubmissionSsl 465
++ lib.optional enableImap 143
++ lib.optional enableImapSsl 993
++ lib.optional enablePop3 110
++ lib.optional enablePop3Ssl 995
++ lib.optional enableManageSieve 4190
++ lib.optional (certificateScheme == "acme-nginx") 80;
};
networking.firewall = {
allowedTCPPorts =
[ 25 ]
++ lib.optional cfg.enableSubmission 587
++ lib.optional cfg.enableSubmissionSsl 465
++ lib.optional cfg.enableImap 143
++ lib.optional cfg.enableImapSsl 993
++ lib.optional cfg.enablePop3 110
++ lib.optional cfg.enablePop3Ssl 995
++ lib.optional cfg.enableManageSieve 4190
++ lib.optional (cfg.certificateScheme == "acme-nginx") 80;
};
};
}

View file

@ -233,183 +233,181 @@ let
};
in
{
config =
with cfg;
lib.mkIf enable {
config = lib.mkIf cfg.enable {
systemd.services.postfix-setup = lib.mkIf cfg.ldap.enable {
preStart = ''
${appendPwdInVirtualMailboxMap}
${appendPwdInSenderLoginMap}
'';
restartTriggers = [
appendPwdInVirtualMailboxMap
appendPwdInSenderLoginMap
systemd.services.postfix-setup = lib.mkIf cfg.ldap.enable {
preStart = ''
${appendPwdInVirtualMailboxMap}
${appendPwdInSenderLoginMap}
'';
restartTriggers = [
appendPwdInVirtualMailboxMap
appendPwdInSenderLoginMap
];
};
services.postfix = {
enable = true;
hostname = "${cfg.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;
enableSubmission = cfg.enableSubmission;
enableSubmissions = cfg.enableSubmissionSsl;
virtual = lookupTableToString (mergeLookupTables [
all_valiases_postfix
catchAllPostfix
forwards
]);
config = {
smtpd_tls_chain_files = [
"${keyPath}"
"${certificatePath}"
];
# Extra Config
mydestination = "";
recipient_delimiter = cfg.recipientDelimiter;
smtpd_banner = "${cfg.fqdn} ESMTP NO UCE";
disable_vrfy_command = true;
message_size_limit = toString cfg.messageSizeLimit;
# virtual mail system
virtual_uid_maps = "static:5000";
virtual_gid_maps = "static:5000";
virtual_mailbox_base = cfg.mailDirectory;
virtual_mailbox_domains = vhosts_file;
virtual_mailbox_maps =
[
(mappedFile "valias")
]
++ lib.optionals cfg.ldap.enable [
"ldap:${ldapVirtualMailboxMapFile}"
]
++ lib.optionals (regex_valiases_postfix != { }) [
(mappedRegexFile "regex_valias")
];
virtual_alias_maps = lib.mkAfter (
lib.optionals (regex_valiases_postfix != { }) [
(mappedRegexFile "regex_valias")
]
);
virtual_transport = "lmtp:unix:/run/dovecot2/dovecot-lmtp";
# Avoid leakage of X-Original-To, X-Delivered-To headers between recipients
lmtp_destination_recipient_limit = "1";
# sasl with dovecot
smtpd_sasl_type = "dovecot";
smtpd_sasl_path = "/run/dovecot2/auth";
smtpd_sasl_auth_enable = true;
smtpd_relay_restrictions = [
"permit_mynetworks"
"permit_sasl_authenticated"
"reject_unauth_destination"
];
# reject selected senders
smtpd_sender_restrictions = [
"check_sender_access ${mappedFile "reject_senders"}"
];
smtpd_recipient_restrictions = [
# reject selected recipients
"check_recipient_access ${mappedFile "denied_recipients"}"
"check_recipient_access ${mappedFile "reject_recipients"}"
# quota checking
"check_policy_service unix:/run/dovecot2/quota-status"
];
# TLS for incoming mail is optional
smtpd_tls_security_level = "may";
# But required for authentication attempts
smtpd_tls_auth_only = true;
# TLS versions supported for the SMTP server
smtpd_tls_protocols = ">=TLSv1.2";
smtpd_tls_mandatory_protocols = ">=TLSv1.2";
# Require ciphersuites that OpenSSL classifies as "High"
smtpd_tls_ciphers = "high";
smtpd_tls_mandatory_ciphers = "high";
# Exclude cipher suites with undesirable properties
smtpd_tls_exclude_ciphers = "eNULL, aNULL";
smtpd_tls_mandatory_exclude_ciphers = "eNULL, aNULL";
# Opportunistic DANE support when delivering mail to other servers
# https://www.postfix.org/postconf.5.html#smtp_tls_security_level
smtp_dns_support_level = "dnssec";
smtp_tls_security_level = "dane";
# TLS versions supported for the SMTP client
smtp_tls_protocols = ">=TLSv1.2";
smtp_tls_mandatory_protocols = ">=TLSv1.2";
# Require ciphersuites that OpenSSL classifies as "High"
smtp_tls_ciphers = "high";
smtp_tls_mandatory_ciphers = "high";
# Exclude ciphersuites with undesirable properties
smtp_tls_exclude_ciphers = "eNULL, aNULL";
smtp_tls_mandatory_exclude_ciphers = "eNULL, aNULL";
# Restrict and prioritize the following curves in the given order
# Excludes curves that have no widespread support, so we don't bloat the handshake needlessly.
# https://www.postfix.org/postconf.5.html#tls_eecdh_auto_curves
# https://ssl-config.mozilla.org/#server=postfix&version=3.10&config=intermediate&openssl=3.4.1&guideline=5.7
tls_eecdh_auto_curves = [
"X25519"
"prime256v1"
"secp384r1"
];
# Disable FFDHE on TLSv1.3 because it is slower than elliptic curves
# https://www.postfix.org/postconf.5.html#tls_ffdhe_auto_groups
tls_ffdhe_auto_groups = [ ];
# As long as all cipher suites are considered safe, let the client use its preferred cipher
tls_preempt_cipherlist = false;
# Log only a summary message on TLS handshake completion
smtp_tls_loglevel = "1";
smtpd_tls_loglevel = "1";
smtpd_milters = smtpdMilters;
non_smtpd_milters = lib.mkIf cfg.dkimSigning [ "unix:/run/rspamd/rspamd-milter.sock" ];
milter_protocol = "6";
milter_mail_macros = "i {mail_addr} {client_addr} {client_name} {auth_authen}";
};
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;
enableSubmission = cfg.enableSubmission;
enableSubmissions = cfg.enableSubmissionSsl;
virtual = lookupTableToString (mergeLookupTables [
all_valiases_postfix
catchAllPostfix
forwards
]);
submissionOptions = submissionOptions;
submissionsOptions = submissionOptions;
config = {
smtpd_tls_chain_files = [
"${keyPath}"
"${certificatePath}"
];
# Extra Config
mydestination = "";
recipient_delimiter = cfg.recipientDelimiter;
smtpd_banner = "${fqdn} ESMTP NO UCE";
disable_vrfy_command = true;
message_size_limit = toString cfg.messageSizeLimit;
# virtual mail system
virtual_uid_maps = "static:5000";
virtual_gid_maps = "static:5000";
virtual_mailbox_base = mailDirectory;
virtual_mailbox_domains = vhosts_file;
virtual_mailbox_maps =
[
(mappedFile "valias")
]
++ lib.optionals cfg.ldap.enable [
"ldap:${ldapVirtualMailboxMapFile}"
]
++ lib.optionals (regex_valiases_postfix != { }) [
(mappedRegexFile "regex_valias")
];
virtual_alias_maps = lib.mkAfter (
lib.optionals (regex_valiases_postfix != { }) [
(mappedRegexFile "regex_valias")
]
);
virtual_transport = "lmtp:unix:/run/dovecot2/dovecot-lmtp";
# Avoid leakage of X-Original-To, X-Delivered-To headers between recipients
lmtp_destination_recipient_limit = "1";
# sasl with dovecot
smtpd_sasl_type = "dovecot";
smtpd_sasl_path = "/run/dovecot2/auth";
smtpd_sasl_auth_enable = true;
smtpd_relay_restrictions = [
"permit_mynetworks"
"permit_sasl_authenticated"
"reject_unauth_destination"
];
# reject selected senders
smtpd_sender_restrictions = [
"check_sender_access ${mappedFile "reject_senders"}"
];
smtpd_recipient_restrictions = [
# reject selected recipients
"check_recipient_access ${mappedFile "denied_recipients"}"
"check_recipient_access ${mappedFile "reject_recipients"}"
# quota checking
"check_policy_service unix:/run/dovecot2/quota-status"
];
# TLS for incoming mail is optional
smtpd_tls_security_level = "may";
# But required for authentication attempts
smtpd_tls_auth_only = true;
# TLS versions supported for the SMTP server
smtpd_tls_protocols = ">=TLSv1.2";
smtpd_tls_mandatory_protocols = ">=TLSv1.2";
# Require ciphersuites that OpenSSL classifies as "High"
smtpd_tls_ciphers = "high";
smtpd_tls_mandatory_ciphers = "high";
# Exclude cipher suites with undesirable properties
smtpd_tls_exclude_ciphers = "eNULL, aNULL";
smtpd_tls_mandatory_exclude_ciphers = "eNULL, aNULL";
# Opportunistic DANE support when delivering mail to other servers
# https://www.postfix.org/postconf.5.html#smtp_tls_security_level
smtp_dns_support_level = "dnssec";
smtp_tls_security_level = "dane";
# TLS versions supported for the SMTP client
smtp_tls_protocols = ">=TLSv1.2";
smtp_tls_mandatory_protocols = ">=TLSv1.2";
# Require ciphersuites that OpenSSL classifies as "High"
smtp_tls_ciphers = "high";
smtp_tls_mandatory_ciphers = "high";
# Exclude ciphersuites with undesirable properties
smtp_tls_exclude_ciphers = "eNULL, aNULL";
smtp_tls_mandatory_exclude_ciphers = "eNULL, aNULL";
# Restrict and prioritize the following curves in the given order
# Excludes curves that have no widespread support, so we don't bloat the handshake needlessly.
# https://www.postfix.org/postconf.5.html#tls_eecdh_auto_curves
# https://ssl-config.mozilla.org/#server=postfix&version=3.10&config=intermediate&openssl=3.4.1&guideline=5.7
tls_eecdh_auto_curves = [
"X25519"
"prime256v1"
"secp384r1"
];
# Disable FFDHE on TLSv1.3 because it is slower than elliptic curves
# https://www.postfix.org/postconf.5.html#tls_ffdhe_auto_groups
tls_ffdhe_auto_groups = [ ];
# As long as all cipher suites are considered safe, let the client use its preferred cipher
tls_preempt_cipherlist = false;
# Log only a summary message on TLS handshake completion
smtp_tls_loglevel = "1";
smtpd_tls_loglevel = "1";
smtpd_milters = smtpdMilters;
non_smtpd_milters = lib.mkIf cfg.dkimSigning [ "unix:/run/rspamd/rspamd-milter.sock" ];
milter_protocol = "6";
milter_mail_macros = "i {mail_addr} {client_addr} {client_name} {auth_authen}";
masterConfig = {
"lmtp" = {
# Add headers when delivering, see http://www.postfix.org/smtp.8.html
# D => Delivered-To, O => X-Original-To, R => Return-Path
args = [ "flags=O" ];
};
submissionOptions = submissionOptions;
submissionsOptions = submissionOptions;
masterConfig = {
"lmtp" = {
# Add headers when delivering, see http://www.postfix.org/smtp.8.html
# D => Delivered-To, O => X-Original-To, R => Return-Path
args = [ "flags=O" ];
};
"submission-header-cleanup" = {
type = "unix";
private = false;
chroot = false;
maxproc = 0;
command = "cleanup";
args = [
"-o"
"header_checks=pcre:${submissionHeaderCleanupRules}"
];
};
"submission-header-cleanup" = {
type = "unix";
private = false;
chroot = false;
maxproc = 0;
command = "cleanup";
args = [
"-o"
"header_checks=pcre:${submissionHeaderCleanupRules}"
];
};
};
};
};
}

View file

@ -21,9 +21,12 @@
...
}:
with lib;
let
inherit (lib)
optionalString
mkIf
;
cfg = config.mailserver;
preexecDefined = cfg.backup.cmdPreexec != null;

View file

@ -52,223 +52,221 @@ let
'';
in
{
config =
with cfg;
lib.mkIf enable {
environment.systemPackages = lib.mkBefore [
(pkgs.runCommand "rspamc-wrapped"
{
nativeBuildInputs = with pkgs; [ makeWrapper ];
}
''
makeWrapper ${pkgs.rspamd}/bin/rspamc $out/bin/rspamc \
--add-flags "-h /run/rspamd/worker-controller.sock"
''
)
];
config = lib.mkIf cfg.enable {
environment.systemPackages = lib.mkBefore [
(pkgs.runCommand "rspamc-wrapped"
{
nativeBuildInputs = with pkgs; [ makeWrapper ];
}
''
makeWrapper ${pkgs.rspamd}/bin/rspamc $out/bin/rspamc \
--add-flags "-h /run/rspamd/worker-controller.sock"
''
)
];
services.rspamd = {
enable = true;
inherit debug;
locals = {
"milter_headers.conf" = {
text = ''
extended_spam_headers = true;
'';
};
"redis.conf" = {
text =
''
servers = "${
if cfg.redis.port == null then
cfg.redis.address
else
"${cfg.redis.address}:${toString cfg.redis.port}"
}";
''
+ (lib.optionalString (cfg.redis.password != null) ''
password = "${cfg.redis.password}";
'');
};
"classifier-bayes.conf" = {
text = ''
cache {
backend = "redis";
}
'';
};
"antivirus.conf" = lib.mkIf cfg.virusScanning {
text = ''
clamav {
action = "reject";
symbol = "CLAM_VIRUS";
type = "clamav";
log_clean = true;
servers = "/run/clamav/clamd.ctl";
scan_mime_parts = false; # scan mail as a whole unit, not parts. seems to be needed to work at all
}
'';
};
"dkim_signing.conf" = {
text = ''
enabled = ${lib.boolToString cfg.dkimSigning};
path = "${cfg.dkimKeyDirectory}/$domain.$selector.key";
selector = "${cfg.dkimSelector}";
# Allow for usernames w/o domain part
allow_username_mismatch = true
'';
};
"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 = "${cfg.dmarcReporting.fromName}";
msgid_from = "${cfg.dmarcReporting.domain}";
${lib.optionalString (cfg.dmarcReporting.excludeDomains != [ ]) ''
exclude_domains = ${builtins.toJSON cfg.dmarcReporting.excludeDomains};
''}
}''}
'';
};
services.rspamd = {
enable = true;
inherit (cfg) debug;
locals = {
"milter_headers.conf" = {
text = ''
extended_spam_headers = true;
'';
};
workers.rspamd_proxy = {
type = "rspamd_proxy";
bindSockets = [
{
socket = "/run/rspamd/rspamd-milter.sock";
mode = "0664";
}
];
count = 1; # Do not spawn too many processes of this type
extraConfig = ''
milter = yes; # Enable milter mode
timeout = 120s; # Needed for Milter usually
upstream "local" {
default = yes; # Self-scan upstreams are always default
self_scan = yes; # Enable self-scan
"redis.conf" = {
text =
''
servers = "${
if cfg.redis.port == null then
cfg.redis.address
else
"${cfg.redis.address}:${toString cfg.redis.port}"
}";
''
+ (lib.optionalString (cfg.redis.password != null) ''
password = "${cfg.redis.password}";
'');
};
"classifier-bayes.conf" = {
text = ''
cache {
backend = "redis";
}
'';
};
workers.controller = {
type = "controller";
count = 1;
bindSockets = [
{
socket = "/run/rspamd/worker-controller.sock";
mode = "0666";
"antivirus.conf" = lib.mkIf cfg.virusScanning {
text = ''
clamav {
action = "reject";
symbol = "CLAM_VIRUS";
type = "clamav";
log_clean = true;
servers = "/run/clamav/clamd.ctl";
scan_mime_parts = false; # scan mail as a whole unit, not parts. seems to be needed to work at all
}
];
includes = [ ];
extraConfig = ''
static_dir = "''${WWWDIR}"; # Serve the web UI static assets
'';
};
};
services.redis.servers.rspamd.enable = lib.mkDefault true;
systemd.tmpfiles.settings."10-rspamd.conf" = {
"${cfg.dkimKeyDirectory}" = {
d = {
# Create /var/dkim owned by rspamd user/group
user = rspamdUser;
group = rspamdGroup;
};
Z = {
# Recursively adjust permissions in /var/dkim
user = rspamdUser;
group = rspamdGroup;
};
"dkim_signing.conf" = {
text = ''
enabled = ${lib.boolToString cfg.dkimSigning};
path = "${cfg.dkimKeyDirectory}/$domain.$selector.key";
selector = "${cfg.dkimSelector}";
# Allow for usernames w/o domain part
allow_username_mismatch = true
'';
};
"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 = "${cfg.dmarcReporting.fromName}";
msgid_from = "${cfg.dmarcReporting.domain}";
${lib.optionalString (cfg.dmarcReporting.excludeDomains != [ ]) ''
exclude_domains = ${builtins.toJSON cfg.dmarcReporting.excludeDomains};
''}
}''}
'';
};
};
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");
serviceConfig = lib.mkMerge [
workers.rspamd_proxy = {
type = "rspamd_proxy";
bindSockets = [
{
SupplementaryGroups = [ config.services.redis.servers.rspamd.group ];
socket = "/run/rspamd/rspamd-milter.sock";
mode = "0664";
}
(lib.optionalAttrs cfg.dkimSigning {
ExecStartPre = map createDkimKeypair cfg.domains;
ReadWritePaths = [ cfg.dkimKeyDirectory ];
})
];
};
count = 1; # Do not spawn too many processes of this type
extraConfig = ''
milter = yes; # Enable milter mode
timeout = 120s; # Needed for Milter usually
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 $(date -d "yesterday" "+%Y%m%d")
upstream "local" {
default = yes; # Self-scan upstreams are always default
self_scan = yes; # Enable self-scan
}
'';
serviceConfig = {
User = "${config.services.rspamd.user}";
Group = "${config.services.rspamd.group}";
AmbientCapabilities = [ ];
CapabilityBoundingSet = "";
DevicePolicy = "closed";
IPAddressAllow = "localhost";
LockPersonality = true;
NoNewPrivileges = true;
PrivateDevices = true;
PrivateMounts = true;
PrivateTmp = true;
PrivateUsers = true;
ProtectClock = true;
ProtectControlGroups = true;
ProtectHome = true;
ProtectHostname = true;
ProtectKernelLogs = true;
ProtectKernelModules = true;
ProtectKernelTunables = true;
ProtectProc = "invisible";
ProcSubset = "pid";
ProtectSystem = "strict";
RemoveIPC = true;
RestrictAddressFamilies = [
"AF_INET"
"AF_INET6"
];
RestrictNamespaces = true;
RestrictRealtime = true;
RestrictSUIDSGID = true;
SystemCallArchitectures = "native";
SystemCallFilter = [
"@system-service"
"~@privileged"
];
UMask = "0077";
};
};
systemd.timers.rspamd-dmarc-reporter = lib.optionalAttrs cfg.dmarcReporting.enable {
description = "Daily delivery of aggregated DMARC reports";
wantedBy = [
"timers.target"
workers.controller = {
type = "controller";
count = 1;
bindSockets = [
{
socket = "/run/rspamd/worker-controller.sock";
mode = "0666";
}
];
timerConfig = {
OnCalendar = "daily";
Persistent = true;
RandomizedDelaySec = 86400;
FixedRandomDelay = true;
includes = [ ];
extraConfig = ''
static_dir = "''${WWWDIR}"; # Serve the web UI static assets
'';
};
};
services.redis.servers.rspamd.enable = lib.mkDefault true;
systemd.tmpfiles.settings."10-rspamd.conf" = {
"${cfg.dkimKeyDirectory}" = {
d = {
# Create /var/dkim owned by rspamd user/group
user = rspamdUser;
group = rspamdGroup;
};
Z = {
# Recursively adjust permissions in /var/dkim
user = rspamdUser;
group = rspamdGroup;
};
};
systemd.services.postfix = {
after = [ rspamdSocket ];
requires = [ rspamdSocket ];
};
users.extraUsers.${postfixCfg.user}.extraGroups = [ rspamdCfg.group ];
};
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");
serviceConfig = lib.mkMerge [
{
SupplementaryGroups = [ config.services.redis.servers.rspamd.group ];
}
(lib.optionalAttrs cfg.dkimSigning {
ExecStartPre = map createDkimKeypair cfg.domains;
ReadWritePaths = [ cfg.dkimKeyDirectory ];
})
];
};
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 = "${config.services.rspamd.group}";
AmbientCapabilities = [ ];
CapabilityBoundingSet = "";
DevicePolicy = "closed";
IPAddressAllow = "localhost";
LockPersonality = true;
NoNewPrivileges = true;
PrivateDevices = true;
PrivateMounts = true;
PrivateTmp = true;
PrivateUsers = true;
ProtectClock = true;
ProtectControlGroups = true;
ProtectHome = true;
ProtectHostname = true;
ProtectKernelLogs = true;
ProtectKernelModules = true;
ProtectKernelTunables = true;
ProtectProc = "invisible";
ProcSubset = "pid";
ProtectSystem = "strict";
RemoveIPC = true;
RestrictAddressFamilies = [
"AF_INET"
"AF_INET6"
];
RestrictNamespaces = true;
RestrictRealtime = true;
RestrictSUIDSGID = true;
SystemCallArchitectures = "native";
SystemCallFilter = [
"@system-service"
"~@privileged"
];
UMask = "0077";
};
};
systemd.timers.rspamd-dmarc-reporter = lib.optionalAttrs cfg.dmarcReporting.enable {
description = "Daily delivery of aggregated DMARC reports";
wantedBy = [
"timers.target"
];
timerConfig = {
OnCalendar = "daily";
Persistent = true;
RandomizedDelaySec = 86400;
FixedRandomDelay = true;
};
};
systemd.services.postfix = {
after = [ rspamdSocket ];
requires = [ rspamdSocket ];
};
users.extraUsers.${postfixCfg.user}.extraGroups = [ rspamdCfg.group ];
};
}

View file

@ -32,61 +32,59 @@ let
[ "acme-finished-${cfg.fqdn}.target" ];
in
{
config =
with cfg;
lib.mkIf enable {
# Create self signed certificate
systemd.services.mailserver-selfsigned-certificate =
lib.mkIf (cfg.certificateScheme == "selfsigned")
{
after = [ "local-fs.target" ];
script = ''
# Create certificates if they do not exist yet
dir="${cfg.certificateDirectory}"
fqdn="${cfg.fqdn}"
[[ $fqdn == /* ]] && fqdn=$(< "$fqdn")
key="$dir/key-${cfg.fqdn}.pem";
cert="$dir/cert-${cfg.fqdn}.pem";
config = lib.mkIf cfg.enable {
# Create self signed certificate
systemd.services.mailserver-selfsigned-certificate =
lib.mkIf (cfg.certificateScheme == "selfsigned")
{
after = [ "local-fs.target" ];
script = ''
# Create certificates if they do not exist yet
dir="${cfg.certificateDirectory}"
fqdn="${cfg.fqdn}"
[[ $fqdn == /* ]] && fqdn=$(< "$fqdn")
key="$dir/key-${cfg.fqdn}.pem";
cert="$dir/cert-${cfg.fqdn}.pem";
if [[ ! -f $key || ! -f $cert ]]; then
mkdir -p "${cfg.certificateDirectory}"
(umask 077; "${pkgs.openssl}/bin/openssl" genrsa -out "$key" 2048) &&
"${pkgs.openssl}/bin/openssl" req -new -key "$key" -x509 -subj "/CN=$fqdn" \
-days 3650 -out "$cert"
fi
'';
serviceConfig = {
Type = "oneshot";
PrivateTmp = true;
};
};
# Create maildir folder before dovecot startup
systemd.services.dovecot2 = {
wants = certificatesDeps;
after = certificatesDeps;
preStart =
let
directories = lib.strings.escapeShellArgs (
[ mailDirectory ] ++ lib.optional (cfg.indexDir != null) cfg.indexDir
);
in
''
# Create mail directory and set permissions. See
# <https://doc.dovecot.org/main/core/config/shared_mailboxes.html#filesystem-permissions-1>.
# Prevent world-readable paths, even temporarily.
umask 007
mkdir -p ${directories}
chgrp "${vmailGroupName}" ${directories}
chmod 02770 ${directories}
if [[ ! -f $key || ! -f $cert ]]; then
mkdir -p "${cfg.certificateDirectory}"
(umask 077; "${pkgs.openssl}/bin/openssl" genrsa -out "$key" 2048) &&
"${pkgs.openssl}/bin/openssl" req -new -key "$key" -x509 -subj "/CN=$fqdn" \
-days 3650 -out "$cert"
fi
'';
};
serviceConfig = {
Type = "oneshot";
PrivateTmp = true;
};
};
# Postfix requires dovecot lmtp socket, dovecot auth socket and certificate to work
systemd.services.postfix = {
wants = certificatesDeps;
after = [ "dovecot2.service" ] ++ lib.optional cfg.dkimSigning "rspamd.service" ++ certificatesDeps;
requires = [ "dovecot2.service" ] ++ lib.optional cfg.dkimSigning "rspamd.service";
};
# Create maildir folder before dovecot startup
systemd.services.dovecot2 = {
wants = certificatesDeps;
after = certificatesDeps;
preStart =
let
directories = lib.strings.escapeShellArgs (
[ cfg.mailDirectory ] ++ lib.optional (cfg.indexDir != null) cfg.indexDir
);
in
''
# Create mail directory and set permissions. See
# <https://doc.dovecot.org/main/core/config/shared_mailboxes.html#filesystem-permissions-1>.
# Prevent world-readable paths, even temporarily.
umask 007
mkdir -p ${directories}
chgrp "${cfg.vmailGroupName}" ${directories}
chmod 02770 ${directories}
'';
};
# Postfix requires dovecot lmtp socket, dovecot auth socket and certificate to work
systemd.services.postfix = {
wants = certificatesDeps;
after = [ "dovecot2.service" ] ++ lib.optional cfg.dkimSigning "rspamd.service" ++ certificatesDeps;
requires = [ "dovecot2.service" ] ++ lib.optional cfg.dkimSigning "rspamd.service";
};
};
}