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Martin Weinelt 2b240501e0
Introduce system name and domain options 
Bring them up from the DMARC reporting section to the mailserver toplevel
so they become reusable for the upcoming TLSRPT integration.

We default to the first domain in the domains option, if not set
explicitly, so that `systemDomain` doesn't become a blocker for existing
setups. We still encourage picking out the intended one, which is likely
the one used for the MX hostname.

This also simplifies the DMARC reporting configuration, which doesn't
need to be so fine-grained.

Co-Authored-By: Emily <git@emilylange.de>
2025-07-09 01:44:10 +02:00
.hydra treewide: reformat with nixfmt-rfc-style 2025-06-15 03:39:44 +02:00
docs Introduce system name and domain options 2025-07-09 01:44:10 +02:00
mail-server Introduce system name and domain options 2025-07-09 01:44:10 +02:00
migrations migrations: ignore maildir when in folder layout 2025-06-26 16:52:49 +02:00
scripts mail-check: fix format string 2025-07-08 04:39:36 +02:00
tests Introduce system name and domain options 2025-07-09 01:44:10 +02:00
.editorconfig Remove makefile section from editorconfig 2017-11-11 09:47:25 +00:00
.envrc Provide direnv integration for flake devshell 2025-05-15 16:29:03 +02:00
.gitignore Provide direnv integration for flake devshell 2025-05-15 16:29:03 +02:00
.gitlab-ci.yml ci: use hydra-cli from pinned nixpkgs 2025-05-10 21:18:17 +02:00
.readthedocs.yaml docs: drop options.md from the repository 2022-12-22 20:45:03 +01:00
default.nix Introduce system name and domain options 2025-07-09 01:44:10 +02:00
flake.lock flake.lock: Update 2025-07-08 03:20:45 +02:00
flake.nix Introduce system name and domain options 2025-07-09 01:44:10 +02:00
LICENSE Initial commit 2016-07-21 18:09:04 +02:00
README.md Release 25.11 2025-05-22 01:31:46 +02:00
shell.nix treewide: reformat with nixfmt-rfc-style 2025-06-15 03:39:44 +02:00

README.md

Simple Nixos MailServer

license pipeline status

Release branches

For each NixOS release, we publish a branch. You then have to use the SNM branch corresponding to your NixOS version.

Features

  • Continous Integration Testing
  • Multiple Domains
  • Postfix
    • SMTP on port 25
    • Submission TLS on port 465
    • Submission StartTLS on port 587
    • LMTP with Dovecot
  • Dovecot
    • Maildir folders
    • IMAP with TLS on port 993
    • POP3 with TLS on port 995
    • IMAP with StartTLS on port 143
    • POP3 with StartTLS on port 110
  • Certificates
    • ACME
    • Custom certificates
  • Spam Filtering
    • Via Rspamd
  • Virus Scanning
    • Via ClamAV
  • DKIM Signing
    • Via Rspamd
  • User Management
    • Declarative user management
    • Declarative password management
    • LDAP users
  • Sieve
    • Allow user defined sieve scripts
    • Moving mails from/to junk trains the Bayes filter
    • ManageSieve support
  • User Aliases
    • Regular aliases
    • Catch all aliases

In the future

  • Automatic client configuration
  • DKIM Signing
    • Allow per domain selectors
    • Allow passing DKIM signing keys
  • Improve the Forwarding Experience
  • User management
    • Allow local and LDAP user to coexist
  • OpenID Connect
    • Depends on relevant clients adding support, e.g. Thunderbird

Get in touch

How to Set Up a 10/10 Mail Server Guide

Check out the Setup Guide in the project's documentation.

For a complete list of options, see in readthedocs.

Development

See the How to Develop SNM documentation page.

Contributors

See the contributor tab

Alternative Implementations

Credits