Hi,

In the last few days some spam messages have been able to elude the filters I 
use. Upon checking the headers, it seems to be following the same pattern.
Left only a few headers to exemplify:

-----
Received: from localhost (localhost [127.0.0.1]) by mx.company.com (Postfix) 
with ESMTP id 8BCA320EC86 for <mym...@company.com>;
Received: from blu0-omc2-s12.blu0.hotmail.com (blu0-omc2-s12.blu0.hotmail.com 
[65.55.111.87]) by mx.company.com (Postfix) with ESMTP id 75B9D20D6C3           
for <mym...@company.com>;
X-Originating-IP: [189.158.116.140]
From: Romain Lenoir <romd...@hotmail.fr>
To: <somefakem...@somedomain.com>
Subject: re:

I just earned $31 in a few hours at home on the computer! I went to - Business 
Week Journal* You will thank me
-----
* this is a <a href=virus_link>Business Week Journal</a> link

My question is: shouldn't there be a rule to verify that the mail specified at 
"To:" header actually corresponds to the one at "Received: [...] for <>"?
This would be a very effective spam catching rule.
I am using /SpamAssassin version 3.2.3 running on Perl version 5.8.8/ invoked 
with /amavisd-new-2.5.4 (20080312)/, on Slackware 12.0.0.

Thank you,
Alex F.

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