After many, many (many) years I finally have cause to migrate off of the long unsupported community edition of Zimbra I've been running and onto something more supported. After a little researching, I decided to give Mailcow a try.

I wanted to setup a Raspberry Pi 4B as an lightweight internal server to handle DHCP and DNS. The existing server was already FreeBSD so when I found support for the Pi, it seemed a natural choice. I love ZFS and use it wherever I can, so if I can also get it running on the Pi, that will make moving the jails and running backups just that much easier.