Docker-mailserver: Production-ready mail server running inside a container

A vibrant MIT-licensed project that currently is maintained by Georg Lauterbach and has a most recent commit from 2 weeks ago, 17.2k stars, 82 open issues (2,158 closed), 11 pull requests, and 329 contributors.

https://docker-mailserver.github.io/docker-mailserver/latest...

> docker-mailserver, or DMS for short, is a production-ready fullstack but simple mail server (SMTP, IMAP, LDAP, Anti-spam, Anti-virus, etc.). It employs only configuration files, no SQL database. The image is focused around the slogan "Keep it simple and versioned".

The project was linked in the concurrent discussion about Gmail removing support for acting as a POP client:

https://news.ycombinator.com/item?id=45439670#45448658

https://gioorgi.com/2020/mail-server-on-docker