[drdaeman]

Dovecot has great support for Sieve, which is a neat and fairly powerful scripting language for mail filtering: http://wiki2.dovecot.org/Pigeonhole/Sieve

If this is not powerful enough, you can make sieve plugin invoke external program and pass it MIME-encoded email message for further processing. This way your server can, for example, add events to your calendar software or do the accounting based on receipt emails (and I forward my SMS to my IMAP server too)

Before Sieve I've used tools like procmail (http://tldp.org/LDP/LG/issue14/procmail.html), although I'm currently only using Dovecot/Sieve setup for my own mail. Some servers I've configured, for example a DIY SMS gateway at the company I've worked for, use just postfix+procmail (+ custom bash and Python scripts).

As for the spam filtering, I've had a good experience with rspamd (https://rspamd.com/), which is light on resources, integrates with Postfix quite nicely, usable out-of-box and is scriptable with Lua.

Hope those few pointers would help.

[9248]

Sorry it took a while to reply.

Thanks a lot for recommending Sieve, I really mean this. There isn't even a single mention of it on the myriad of the half-baked 'how to setup isp-mail for personal use' blogspam I keep stumbling into when googling issues.

It looks like a great tool. Now I can probably have 'n' junk mailboxes with varying personal filters (always wanted this).