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

2005-09-23 07:10:11


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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