I am not an expert but I have had success before, fighting spam, using this method
I use outlook express
File Properties Details Message Source
Then I look for an ISP
In this case,I thinkI found one
Concentric.net
Then I write to admin or postamster@ the isp and ask them to stop spamming me, because it is illegal. I copy paste some of the message source.
Here is a snip of the source that leads me to believe that their ISP is concentric.net :
(Nice to meet you) with ESMTP id
Received: from localhost (localhost.concentric.net)
by topsitesmail (LSMTP for Windows NT v1.1b)
with SMTP id <0.009163FD@topsitesmail>; Wed, 28 May 2003 15:12:48 -0700
Date: Wed, 28 May 2003 12:19:17 -0700
From: Paul Thomas <
[email protected]>
I might be wrong, but it has worked before. .