Hi, We have a system with a few hundred users, many of which forward their mail off the server to their gmail or yahoo account. Lately I've started to notice quite a few messages are being tagged by gmail and delayed being received as unsolicited. I know the KAM rules contain a marketing rule, and razor helps too, but too many of these marketing messages are not being tagged.
I'm referring to warnings such as this: Jul 6 22:54:20 bwipropemail postfix/smtp[25057]: C09F4885EA2BC: to=<44...@gmail.com>, orig_to=<44...@example.com>, relay=alt1.gmail-smtp-in.l.google.com[173.194.208.26]:25, delay=38223, delays=38220/1.3/1/0.22, dsn=4.7.0, status=deferred (host alt1.gmail-smtp-in.l.google.com[173.194.208.26] said: 421-4.7.0 [66.XXX.XXX.100 15] Our system has detected an unusual rate of 421-4.7.0 unsolicited mail originating from your IP address. To protect our 421-4.7.0 users from spam, mail sent from your IP address has been temporarily 421-4.7.0 rate limited. Please visit 421-4.7.0 https://support.google.com/mail/answer/81126 to review our Bulk Email 421 4.7.0 Senders Guidelines. 5si23309629qks.82 - gsmtp (in reply to end of DATA command)) Here is an example message: http://pastebin.com/kaD3AQMz I realize bayes may be a problem on this one, but do you have any suggestions for blocking these more effectively before they're forwarded on to gmail? Thanks, Alex
