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chasquid

chasquid is an SMTP (email) server with a focus on simplicity, security, and ease of operation.

It is designed mainly for individuals and small groups.

It's written in Go, and distributed under the Apache license 2.0.

Gitlab CI status Cirrus-CI Status Go Report Card Coverage
Docs OFTC IRC

Features

  • Easy
    • 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, Ubuntu, and Arch.
    • Supports using Dovecot for authentication.
  • Useful
    • Multiple/virtual domains, with per-domain users and aliases.
    • Suffix dropping (user+something@domainuser@domain).
    • Hooks for integration with greylisting, anti-virus, anti-spam, and DKIM/DMARC.
    • International usernames (SMTPUTF8) and domain names (IDNA).
  • Secure
    • Tracking of per-domain TLS support, prevents connection downgrading.
    • Multiple TLS certificates.
    • Easy integration with Let's Encrypt.
    • SPF and MTA-STS checking.

Documentation

The how-to guide and the installation guide are the best starting points on how to install, configure and run chasquid.

You will find all documentation here.

Contact

If you have any questions, comments or patches please send them to the mailing list, chasquid@googlegroups.com.

To subscribe, send an email to chasquid+subscribe@googlegroups.com.

You can also reach out via IRC, #chasquid on OFTC.