On 2/6/2013 10:51 AM, l...@airstreamcomm.net wrote: > Just curious if anyone knows of any tools that can search for > messages already delivered (to maildir) that are spam. We have many > years of email on our system, some of those years before having a > reliable spam filtering solution, so we would like to try to > identify spam messages and purge them from our customer's mailboxes. >
I think removing already-delivered mail is a terrible idea, and probably not legal in some places. Imagine the outcry over a single false positive. Whatever method you use, there will be false positives. You can probably use SpamAssassin and/or Clamav + Sanesecurity addons to identify suspect mail and move them to a "Spam" folder in the user's maildir. But you should probably give users a chance to opt-out (or better -- require them to opt-in) before reprocessing old mail. -- Noel Jones
