We have Exchange 2013 SP1 CU6 on 2 servers, 1 Mailbox/hub, and 1 Edge Transport. Recently the level of SPAM that's getting through the edge has gone through the room. Where I used to get 2 or 3 a day, now I'm getting around 40. I've checked the logs
and the SPAM filters seem to be blocking junk, also the RBL's are blocking a ton of mail, yet some messages that are obvious junk are still getting through with a 2 or below SCL. We have not enabled whitelisting, and the filters are up to date.
Any suggestions?
Mike Pietrorazio