spf-discuss
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RE: Broken SPF implementation

2004-12-01 07:36:25
-----Original Message-----
From: owner-spf-discuss(_at_)v2(_dot_)listbox(_dot_)com
[mailto:owner-spf-discuss(_at_)v2(_dot_)listbox(_dot_)com]On Behalf Of M Z R
Sent: Tuesday, November 30, 2004 10:09 PM
To: spf-discuss(_at_)v2(_dot_)listbox(_dot_)com
Subject: [spf-discuss] Broken SPF implementation


Hi Guys,

Is there a dedicated list or entity where broken SPF implementation
(both publishing and checking) can be reported?

I got this guy rejecting every domain with "-all" stating that the
mail came from an arbitrary IP (10.65.65.1). The following will
explain:

   ----- The following addresses had permanent fatal errors -----
<xxxxx(_at_)stream-net(_dot_)com>
    (reason: 550 10.65.65.1 does not pass SPF requirements for domain
xxx(_at_)qalacom(_dot_)com)

   ----- Transcript of session follows -----
... while talking to mail.stream-net.com.:

MAIL From:<xxx(_at_)qalacom(_dot_)com> SIZE=4139

<<< 550 10.65.65.1 does not pass SPF requirements for domain
xxx(_at_)qalacom(_dot_)com
554 5.0.0 Service unavailable

Anybody who is publishing with "-all" can verify that this guy is
reporting the IP "10.65.65.1" as the sending host for all domains that
terminates with "-all". I already sent email to the post master of the
server.

Probably his mail server is inside a firewall, and the firewall is using port 
forwarding and reverse
NAT to protect the mail server.

Hence his mail server sees *all* connections as originating from the internal 
interface of his
firewall (10.65.65.1)

This should probably be in the FAQ or "what not to do".  :)

Terry Fielder
Manager Software Development and Deployment
Great Gulf Homes / Ashton Woods Homes
terry(_at_)greatgulfhomes(_dot_)com
Fax: (416) 441-9085




Regards,

MZR

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