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Re: [spf-discuss] Re: SPF and gateways

2005-09-23 07:36:15

No I intend to use the MAIL FROM domain. That is assuming that the AV gateway 
preserves it. 
  
Simon 
  

---- Message from mailto:<johnp(_at_)idimo(_dot_)com johnp 
<johnp(_at_)idimo(_dot_)com> at 23-Sep-2005 16:09:33 ------ 



Simon Tyler wrote:

Why would it obviously match? Take your email headers I just received. If I 
had
"apex.listbox.com" as my gateway machine. I could search down, find the 
header: 
Received: from miranda.server-plant.co.uk (miranda.server-plant.co.uk 
[193.110.88.60]) 
by apex.listbox.com (Postfix) with ESMTP id 144B055773 for
<spf-discuss(_at_)v2(_dot_)listbox(_dot_)com>; Fri, 23 Sep 2005 09:41:26 
-0400 (EDT)


extract your IP address - 193.11.88.60

and then use it to check the SPF record. 

So are you proposing to check the SPF record of the From:domain against all the 
Received: 
headers IP's until you find a match? What about the ReplyTo and the Return-Path 
headers? 
That is potentially  going to be one seriously long and messing series of checks


Slainte,
JohnP

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