On Sun, Nov 4, 2012 at 6:45 PM, Brian Schang <post...@lists.schang.net> wrote: > In the past week, my server has accepted dozens of emails that were not > deliverable. In all cases the issue has been a mail forwarding loop > which resulted in the email bouncing. Given that my configuration has > not changed in many months, I was puzzled. However, a little research > led me to look into a Delivered-To exploit. I looked at a few of the > messages in the queue (postcat), and sure enough those messages had a > Delivered-To header line.
FWIW, I've been seeing the same thing here. First one I saw was on Oct 23, but seems to be increasing in frequency. -Dave
