Doctor, it hurts when I do this.
Stop doing that. The less crud you accept that you will not end up delivering, the less email you will NDR. Recipient filtering goes a long, long way to prevent blowback. Since the bad emails are coming from lots of different IP, tar pitting won't work as well. From: Michael B. Smith [mailto:[EMAIL PROTECTED] Sent: Tuesday, March 18, 2008 11:44 AM To: MS-Exchange Admin Issues Subject: RE: NDR attachment stripping or recipient filtering - which is better? Stop sending NDRs? Regards, Michael B. Smith MCSE/Exchange MVP http://TheEssentialExchange.com From: Kyle Plummer [mailto:[EMAIL PROTECTED] Sent: Tuesday, March 18, 2008 11:42 AM To: MS-Exchange Admin Issues Subject: NDR attachment stripping or recipient filtering - which is better? I'm using Exchange 2003 and am trying to keep my domain from participating in NDR flood attacks. I've identified two possible methods: NDR attachment stripping, or recipient filtering paired with SMTP tar pitting. Any preference as to which is better, or are there other methods to fight this crud? Thanks in advance, Kyle B. Plummer ~ Ninja Email Security with Cloudmark Spam Engine Gets Image Spam ~ ~ http://www.sunbeltsoftware.com/Ninja ~
