On Thu, 25 Sep 2003 13:37:25 -0700, AthlonRob <athlonrob@nodomainhere.ext>
wrote:
<snip>

I'm not sure on the Return-Paths - I've asked a few folks and none of 
them have had a real answer as to their real-ness.  Since nobody has 
told me (or complained to me) they are forged, I'm going on the 
assumption that the Return-Path header is legitimate, and as such, 
haven't blocked my mailserver from sending out warnings to those 
addresses.

yeah, what he said... wait, what I said... wait, am I really myself?

The IP addresses are definitely real.  It is complicated to send an 
email without your IP address appearing somewhere on it.

actually no, not all IP addresses are real

About the only thing I can think to do to verify the legitimacy of that 
Return-Path header would be to set up a perl script to try and match up 
IP addresses with the domain in the Return-Path header... but I don't 
play Perl very much, so wouldn't want to undertake something like that 
just now.  :-)

as it was said, in emails only the received lines can reveal the sender