I self host my email since 20+ years. Always done with the postfix + dovecot stack with the works (dkim dmark DNS stuff etc).
In the last few years I just removed all spam filters as they where a chore and didn’t provide no much benefit (3-5 spam emails per week) even if my main email address has been out and about for at least 2 decades or more.
Recently, last few weeks, spam is picking up to the point I receive some 10+ spam emails per day and this is pretty annoying, obviously.
So, what are you doing for spam filtering at server level nowadays? Is it still spamassassin circus? Anything better or more efficient?
rspamd is used nowadays. Add sieve filtering to automatically move mails with a 7.0 or higher to a spam-folder. Manually move mails there that haven’t been detected and move mails out of the spam folder that have been falsely detected (personally don’t have any false positives with rspamd).
Then set up bayes learning with rspamd, either when mails are moved between folders or every few hours.
Do you have documentation or references on how to setup rspamd?
I just googled something. Don’t remember what I ended up on. Probably some blog post combined with rspamd’s website. It depends on your mailserver anyways.