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[spf-discuss] Google not rejecting on SPF Fail?

2007-12-22 19:46:08
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Julian Mehnle wrote:
Julian Mehnle wrote:
Frank Ellermann wrote:
I think [Google] reject FAIL, [...]

See also <http://www.openspf.org/Frank_Ellermann/Google>, if it's
generally interesting I could move it to an "ordinary" openspf
page.

Before we consider that, how can we be sure that the rejection
demonstrated on that page is actually due to an SPF Fail?

Here's an indication to the contrary from 2007-12-03:
[...]

And here's the result of me sending an SPF-spoofed message to a GMail
account I created ad-hoc:

| Received: by 10.150.202.10 with SMTP id z10cs28334ybf;
|         Sat, 22 Dec 2007 18:18:36 -0800 (PST)
| Received: by 10.65.73.16 with SMTP id a16mr4520780qbl.36.1198376315518;
|         Sat, 22 Dec 2007 18:18:35 -0800 (PST)
| Return-Path: <julian(_at_)mehnle(_dot_)net>
| Received: from earbone.schlitt.net (openspf.org [76.79.20.188])
|         by mx.google.com with ESMTP id h7si3376335roe.17.2007.12.22.18.17.59;
|         Sat, 22 Dec 2007 18:18:35 -0800 (PST)
| Received-SPF: fail (google.com: domain of julian(_at_)mehnle(_dot_)net does 
not designate 76.79.20.188 as permitted sender) client-ip=76.79.20.188;
| Authentication-Results: mx.google.com; spf=hardfail (google.com: domain of 
julian(_at_)mehnle(_dot_)net does not designate 76.79.20.188 as permitted 
sender) smtp(_dot_)mail=julian(_at_)mehnle(_dot_)net

I.e., no SMTP-time rejection.

On the other hand, I tried sending a message from a dynamically allocated
IP address and got the following SMTP response after DATA:

| 550-5.7.1 [62.245.209.57] The IP you're using to send email is not authorized
| 550-5.7.1 to send email directly to our servers. Please use
| 550 5.7.1 the SMTP relay at your service provider instead. [...]

So it seems more likely that the latter response is specific to rejections
due to dynamically allocated IP addresses.

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