On Thu, 2012-03-22 at 07:45 -0400, David F. Skoll wrote: > Disagreed. I don't believe SPF has cut backscatter down by > more than a few percentage points. > YMMV of course, but it worked for me: when I put up an SPF record backscatter, which had been a problem at the time, was dramatically reduced.
Now I don't see any backscatter except for the occasional 'mailbox full' or 'out of office' message that arrives on a mailing list. I deduce that greylisting, which my ISP uses, is quite effective at dealing with backscatter too. Martin