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Martin Weinelt 86a2bb9afd flake.lock: Update 
Flake lock file updates:

• Updated input 'git-hooks':
    'github:cachix/git-hooks.nix/580633fa3fe5fc0379905986543fd7495481913d' (2026-04-07)
  → 'github:cachix/git-hooks.nix/61ab0e80d9c7ab14c256b5b453d8b3fb0189ba0a' (2026-05-11)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/9a3a5b8400951b3497d2ef8f239f8451175cf3a1' (2026-04-18)
  → 'github:NixOS/nixpkgs/657e2fa0760e27167cdacb1ec5d84782be312013' (2026-05-21)
2026-05-21 17:20:31 +02:00
.hydra
hydra: use nixpkgs-unstable instead of nixos-unstable-small
2026-04-21 15:00:29 +02:00
docs
docs/release-notes: add tls changes
2026-04-26 01:47:39 +02:00
mail-server
borgbackup: use package from upstream NixOS service
2026-04-27 12:43:59 +02:00
migrations
treewide: fix typos
2026-03-23 01:35:59 +01:00
scripts
quota: expose global quota settings
2026-04-13 01:19:14 +02:00
tests
Only prepend {CRYPT} scheme if there is no scheme present
2026-04-23 14:45:22 +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
.git-blame-ignore-revs
git-blame-ignore-revs: init
2026-03-12 13:43:09 +01:00
.gitignore
Provide direnv integration for flake devshell
2025-05-15 16:29:03 +02:00
.gitlab-ci.yml
ci: run on main branch
2026-04-12 03:59:39 +02:00
.readthedocs.yaml
docs: fail build on warnings
2026-03-11 17:01:39 +01:00
.typos.toml
Check for obvious typos in pre-commit
2026-03-23 01:35:27 +01:00
default.nix
fts: update docs and defaults
2026-04-21 00:58:58 +02:00
flake.lock
flake.lock: Update
2026-05-21 17:20:31 +02:00
flake.nix
Check for obvious typos in pre-commit
2026-03-23 01:35:27 +01:00
LICENSE
Initial commit
2016-07-21 18:09:04 +02:00
pyproject.toml
ruff: reject implicit string concat
2025-07-09 03:59:54 +02:00
README.md
Switch default branch to main
2026-04-12 03:54:39 +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

  • Continuous Integration Testing
  • Multiple Domains
  • Postfix
    • SMTP on port 25
    • Submission TLS on port 465
    • Submission StartTLS on port 587
    • LMTP with Dovecot
    • DANE and MTA-STS validation
    • SMTP TLS Reports (RFC 8460)
  • 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
    • Automatic key generation
    • Multiple selectors per Domain
  • 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
  • Improve the Forwarding Experience

In the future

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

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Description
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Readme 167 MiB
Languages
Nix 92.8%
Python 6.5%
Sieve 0.4%
Shell 0.3%