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Simple and complete declarative NixOS Mailserver setups
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Martin Weinelt 7d433bf898 Merge branch 'dovecot-hybrid-curve' into 'master' 
dovecot: update TLS requirements

See merge request simple-nixos-mailserver/nixos-mailserver!477
2025-12-21 12:54:46 +00:00
.hydra Release 25.11 2025-11-25 13:56:52 +01:00
docs treewide: replace/remove dovecot2 service name 2025-12-19 02:52:55 +01:00
mail-server dovecot: restrict TLS cipher suites 2025-12-19 04:00:47 +01:00
migrations migrations: strongly indicate dry runs 2025-11-26 20:21:56 +01:00
scripts Switch to NixOS ACME module for certificate management 2025-12-19 02:36:28 +01:00
tests treewide: replace/remove dovecot2 service name 2025-12-19 02:52:55 +01:00
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.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: fix Read the Docs by using portable-nix 2025-11-05 01:10:52 +01:00
default.nix treewide: replace/remove dovecot2 service name 2025-12-19 02:52:55 +01:00
flake.lock flake.lock: Update 2025-11-29 02:42:26 +01:00
flake.nix docs: extract setup example into .nix file and include 2025-12-19 02:17:32 +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 Release 25.11 2025-11-25 13:56:52 +01:00
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
    • 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
  • 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

  • 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