> Are you doing anything now? Yes, but when things were implemented, the scope of what they perform wasn't really considered.
Recently I had Imail TS get into my system and view some rules. While they were there, they noticed some oddities in the Anti-Spam folder, and then explained them to me at length. Specifically, we're doing statistical spam checking, as well as using the Hosts Blacklists, which merely appends the spam info into the header. In that list, we're performing the reverse DNS lookup, AND verifying the HELO/ELHO domain. These are the options I'm considering removing, because it was further discovered that we weren't applying any rules for further filtering. In other words, a message gets stamped and verified, then passed on to the user ANYWAY. While I have no reason to remove the Host Blacklisting (I've already proven that false positives are incredibly high from those five services), I just don't understand what value there is in the verification process. All it's doing is slowing down the server, and we're still not reaping the benefit. Now that I've finished digressing, I can say that you have answered my question, by suggesting methods to look for false positives in people who receive spam in quantity. The rest of my diatribe is perhaps useless, but it helps paint a picture of where we stand now. Thanks for your reply! Eric To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/
