This isn't a DoS as such. The problem occurs because the 4.1.60 scan engine for McAfee products isn't compatible with the 4367 DATs. In order to use these DATs you have to update your scan engine, which probably requires disabling WebShield and running the SuperDAT updater--this is what I had to do with our Exchange server (running GroupShield) yesterday morning! Nate Nord wrote: > Just wondering if anyone else has seen this come through their mail portal. > Something has caused our McAfee Webshield SMTP to seriously eat > processor time... to the point that it will no longer forward scanned > mail. I've had to temporarily bypass it until I figure out what it's > choking on. I saw several other posts that said this sent processors > into some kind of loop and this is exactly what appears to be happening with our portal. > Paul Knibbs Systems Administrator 3T Productions Ltd T: 0161 492 1400 F: 0161 492 1401 www.3t.co.uk