Marcin Krol schrieb:
Is anybody here willing to share other / better techniques and tips?
No silver bullet, only blood, sweat and tears :-)
* Create custom rules that to match your uncaught spam (and maybe share
these rules back on this list).
* If circumstances permit, make use of extensive whitelisting, so that
you can increase the score of rules (or maybe lower the threshold after
which you consider a message to be spam).
* Experiment with additional blacklists (but beware of false positives).
* Consider using some blacklist(s) to actually reject messages before
they reach SpamAssassin (often, the Spamhaus lists are fine for that
purpose).
-- Matthias
