Just some lightweight scripts I use to maintain SpamAssassin/Postfix/Dovecot

I run this for each of my users (whose MUAs are configured to move "deleted" messages to ~/deleted-ham and to move junk/spam messages to ~/missed-spam) nightly just before 02:00 local (in each user's crontab).

Anything in ${MISSED_SPAM} and ${DELETED_HAM} will get a cat /dev/null >| after being processed. ${ADDITIONAL_~} won't.

~ expansion works, even if you have a real sh(1) (eg, you're not Linux), provided that shell's eval dtrt.

It's okay if the ADDiTIONAL lists are empty.

The From/To headers from $MISSED_SPAM are echoed because some times I see obvious patterns in them and write my own SpamAssassin rules based on that. If that's useless to you, just comment that line out.

Just the "From/To" headers part of gr-sa-learn.sh.

I run this nightly around 20:00 local. (So in case I want to actually look at the offending message more than just its headers, I've got a few hours to do that before gr-sa-leanr.sh nukes it from orbit.)

Pretty trivial, but I found myself typing this too damn often.

tail(1)s Postfix's (or whatever your MTA is) maillog and procmail(1)'s user-specific log (you DO have LOGFILE set in ~/.procmailrc, right?) in the background (which, since it's within a shell script, detaches from the calling shell entirely), captures the pids of those two tail(1) processes, and emits them (so you can clean up the procs).