Setting up a mail server

Basic instructions by Thomas Leister can be found here. Several Debian releases out of date, but mostly still sound.

Installing rspamd

To run on Raspberry Pi, the most useful source for a package seems to be this repository.

“It would be easier to run rspamd in a VM or a container, and I'd be a lot more confident of a successful outcome” G.W. Haywood rspamd@jubileegroup.co.uk (Ged) on the rspamd mailing list.