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Martin Weinelt ecbe707330 postfix/dovecot: support SecP256r1MLKME768 key exchange 
Added support means we allow it, but for now we don't prefer it, since it
has not seen much use yet. For Postfix that means it lands below the two
groups that already send a key share and save us a roundtrip.

https://www.ietf.org/archive/id/draft-kwiatkowski-tls-ecdhe-mlkem-02.html
2026-04-26 01:04:33 +02:00
.hydra
hydra: use nixpkgs-unstable instead of nixos-unstable-small
2026-04-21 15:00:29 +02:00
docs
fts: update docs and defaults
2026-04-21 00:58:58 +02:00
mail-server
postfix/dovecot: support SecP256r1MLKME768 key exchange
2026-04-26 01:04:33 +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
2026-04-18 16:22:38 +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%