On Fri, Oct 08, 2004 at 03:12:44PM +0100, Paul Howarth wrote:
This won't actually stop them spoofing your domain (most spammers aren't
terribly bright, as can be seen from the many spams landing in my junkmail
folder these days with "Received: from %RNDDIGIT[1]%RNDDIGIT[2]" etc. in
the headers). However, you'll feel better knowing that a few less of their
spams get through to sites implementing SPF checks or running SpamAssassin
3.x.
It won't stop them from doing it, but it makes it very easy for anyone to
see that the messages are forged. Eventually, when enough people check, it
_will_ stop them.