chasquid is an SMTP (email) server, written in #golang

chasquid is an SMTP (email) server.

https://github.com/albertitohttps://github.com/albertito/chasquid/chasquid

It aims to be easy to configure and maintain for a small mail server, at the expense of flexibility and functionality.

It's written in Go.

Features

• Easy to configure, hard to mis-configure in ways that are harmful or insecure (e.g. no open relay, clear-text authentication, etc.).

• Tracking of per-domain TLS support, prevents connection downgrading.

• SMTP UTF8 (international usernames).

• IDNA (international domain names).

• Hooks for easy integration with greylisting, anti-virus and anti-spam.

• Multiple domains, with per-domain user database and aliases.

• Multiple TLS certificates.

• Suffix dropping (user+something@domain -> user@domain).

• Easy integration with letsencrypt.

• SPF checking.

• Monitoring HTTP server, with exported variables and tracing to help debugging.