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622c7c2204
This adds the option to add a customized userdb_mail parameter to the Dovecot userdb, overriding the global mail_location setting. This change applies to both mail delivery (handled via LMTP from postfix to Dovecot), as well as Maildir access via IMAP etc. Furthermore, the UID and GID can be customized to reflect the desired permissions. Finally, the Dovecot virtual user home, holding the user's private state, can be set. These changes allow for great flexibility in the mail server setup. For instance, users can selectively have their mail accessible through a Maildir in their home directory, or via a purely virtual user maintained under /var/vmail.
Release branches
For each NixOS release, we publish a branch. You then have to use the SNM branch corresponding to your NixOS version.
- For NixOS 24.11
- For NixOS 24.05
- For NixOS unstable
- Use the SNM branch
master - Documentation
- Use the SNM branch
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
- 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
- Join the Libera Chat IRC channel
#nixos-mailserver
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
- send mail graphic by tnp_dreamingmao from TheNounProject is licensed under CC BY 3.0
- Logo made with Logomakr.com