Welcome to NixOS Mailserver's documentation!

• Setup Guide
  • Setup DNS A/AAAA records for server
  • Setup the server
  • Setup all other DNS requirements
  • Test your Setup
  • Next steps (optional)
• Advanced Configurations
• Contribute or troubleshoot
  • Development Shell
  • Run NixOS tests
  • Contributing to the documentation
  • Manual migrations
• FAQ
  • catchAll users can't send email as user other than themself
• Release Notes
  • NixOS 25.11
  • NixOS 25.05
  • NixOS 24.11
  • NixOS 24.05
  • NixOS 23.11
  • NixOS 23.05
  • NixOS 22.11
  • NixOS 22.05
  • NixOS 21.11
  • NixOS 21.05
  • NixOS 20.09
• Mailserver options
  • mailserver
  • mailserver.loginAccounts
  • mailserver.certificate
  • mailserver.dkim
  • mailserver.srs
  • mailserver.dmarcReporting
  • mailserver.fullTextSearch
  • mailserver.redis
  • mailserver.ldap
  • mailserver.monitoring
  • mailserver.backup
  • mailserver.borgbackup
• Migrations
  • NixOS 25.11

Features

• Full text search
• LDAP Support
• Sender Rewriting Scheme

How-to

• Backup Guide
• Add Radicale
• Add Roundcube, a webmail
• Tune spam filtering
  • Auto-learning
  • Train from existing folders
  • Tune symbol weight
  • Tune action thresholds
  • Access the rspamd web UI
    • With ssh forwarding
    • With an nginx reverse-proxy
• Nix Flakes
• Autodiscovery

Indices and tables

• Index

• Module Index

• Search Page