Hi Aaron, > This could very well be the place for a spam detector. However, SpamAssassin > works best at the MTA level and that's because it normally doesn't can the > spam for you; rather, it marks the subject with [spam] ala > > "Subject: [SPAM] blah blah blah"
It changes the subject and/or modifies some headers (X-Spam-Status), yes. I don't see a difference if the MTA or dbmail handles this? MTA -> SpamAssassin -> MTA -> dbmail-smtp MTA -> dbmail-smtp -> SpamAssassin -> dbmail-smtp dbmail only needs the information if SpamAssassin got the mail yet: MTA -> dbmail-smtp --send-to-sa -> SpamAssassin -> dbmail-smtp If dbmail-smtp is called with --send-to-sa it can check if the user wants the spamcheck. If not it can behave as if it was called without --send-to-sa. The MTA can't do that because the MTA doesn't know the final user. Or did I miss something? > IMHO, the next thing to do is to write a Sieve script which moves all of the > messages with "spam" in their subject line into a spam folder or just drop > them altogether (though this is generally not recommended). Yes. > With respect to the sorting interface, because I'm a fan of statistical > Bayesian spam filters, I'd like to get one of those set up (and some of them > come in library form, too). The main problem is that most of them maintain > their own mbox or berkeley db database of spam to match against. That won't > work with dbmail, but we *do* have a "real" database right under our noses ;-) > So I've been looking into ways that we can build a corpus management > interface. Something that would give users a "mark as spam" button or a "Spam" > mailbox to move spam into / false positives out of. SpamAssassin has a quite nice Bayesian spam filter integrated. Mails can be piped to SpamAssassin: cat the-mail |sa-learn --ham cat the-mail |sa-learn --spam To teach the Bayesian filter. Spam could be bounced to a special address that pipes the mail to sa-learn then for example. sa-learn keeps a database then and doesn't need access to mails in the dbmail database. -- MfG Thomas Mueller - http://www.tmueller.com for pgp key (95702B3B)
