SMTP (email) server with a focus on simplicity, security, and ease of operation [ CLI ] [ Beta ]
Easy to configure.
Hard to mis-configure in ways that are harmful or insecure (e.g. no open relay, or clear-text authentication).
Monitoring HTTP server, with exported variables and tracing to help debugging.
Integrated with Debian and Ubuntu.
Supports using Dovecot for authentication.
Multiple/virtual domains, with per-domain users and aliases.
Suffix dropping (user+something@domain → user@domain).
Hooks for integration with greylisting, anti-virus, anti-spam, and DKIM/DMARC.
International usernames (SMTPUTF8) and domain names (IDNA).
Tracking of per-domain TLS support, prevents connection downgrading.
Multiple TLS certificates.
Easy integration with Let's Encrypt.
SPF and MTA-STS checking.
Documentation : https://blitiri.com.ar/p/chasquid/docs/howto/
installation : https://blitiri.com.ar/p/chasquid/docs/install/