Docker Mailserver

Overview

Docker Mailserver is an open-source, easy-to-deploy mail server built to run entirely within Docker containers. It integrates popular components like Postfix (SMTP), Dovecot (IMAP/POP3), SpamAssassin, ClamAV, Amavis, OpenDKIM, and more — providing a complete email hosting stack with spam filtering, virus scanning, DKIM/DMARC support, and secure authentication. Designed for self-hosting enthusiasts and small to medium ops teams, it simplifies mail infrastructure while staying configurable and extensible.

Key features

• SMTP (Postfix)
• IMAP/POP3 (Dovecot)
• Spam filtering (SpamAssassin)
• Virus scanning (ClamAV)
• DKIM/DMARC
• TLS/SSL
• Relay controls
• Config override support