Setting up mailcow

I’ve been interested in setting up a self-hosted email server for quite sometime. I initially tried Mail-in-a-Box, then NixOS Mailserver and I recently moved to mailcow. Some setup notes for my future self:

• I used a plain Debian instance on Hetzner. Usually, I create a non-root user and disable password-based SSH, but mailcow wants to run everything as root and so I didn’t bother.
• I disabled Solr and ClamAV so that I can use a lower memory instance.

That’s it! It was smooth sailing other than that.