Crespillo, Matias wrote: > I apologize in advance for making a lazy question, but is there a quick > guide somewhere as to how to integrate Spam Assassin with an exchange > server? Or maybe some way to set it in a way it will get the mails before, > filter and then forward them to exchange unchanged?. > > Thanks a lot in advance. >
We have spamassassin sitting in front of the exchange server. Basically, the MX record for our domains point to Linux boxes. On each of those boxes, we're running SpamAssassin and ClamAV. SpamAssassin uses a site wide, SQL based Bayes database local to each box, with a few tricks to help synchronize mail reclassified by Exchange users as ham or spam. Only after passing through the MX servers does mail arrive at Exchange. (The firewall permits SMTP connections from the MX servers only.) On Exchange, we're using Symantec AV to provide another layer of virus protection. We don't forward the mail unchanged. If mail is spam, the headers are re-written to put "*SPAM?*" at the front of the subject line and to make the original message an attachment. Of course, if the mail isn't marked as spam, it's transparent to the users. -- Steve
