Gmail's SPF records end in "?all" thus prohibiting
normal SPF checkers to do anything (many larger
email providers seem to do this, if anybody could
shed light on the why, that'd be greatly appreciated).
We get around this problem by keeping a list
of larger email providers that do this sort of
thing, and then take action regardless of the "?all",
so far without any serious complaints (i.e. gmail.com's
records seem reliable).
On Mon, 2007-06-25 at 14:04 +0000, Julian Mehnle wrote:
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This belongs on spf-discuss rather than spf-webmasters. Do not reply to
spf-webmasters.
Julian.
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Subject: [spf-webmasters] SPF
Date: Monday, 2007 June 25 13:23
From: "Prakhar Birla" <prakharbirla(_at_)gmail(_dot_)com>
To: spf-webmasters(_at_)v2(_dot_)listbox(_dot_)com
Hi,
I just got a mail from LinkedIn on my gmail account. The from and to were
my e-mail addresses. This was the header:
Delivered-To: prakharbirla(_at_)gmail(_dot_)com
Received: by 10.114.121.7 with SMTP id t7cs10895wac;
Mon, 25 Jun 2007 06:12:02 -0700 (PDT)
Received: by 10.141.20.7 with SMTP id x7mr711127rvi.1182777122126;
Mon, 25 Jun 2007 06:12:02 -0700 (PDT)
Return-Path:
<notif+uGGdmzFmwF_wGswPekhRmLOsP8BwR_mTYLAxBmqq5uNc9NXTlpprDrqv9Gx9WyuM5VCNnFqFrIxRXbd5SIAxChF_SODxiYD99_(_at_)bounce(_dot_)linkedin(_dot_)com>
Received: from mail05-a-ab.linkedin.com
(mail05-a-ab.linkedin.com [64.74.220.81])
by mx.google.com with ESMTP id 3si6651182rvi.2007.06.25.06.12.00;
Mon, 25 Jun 2007 06:12:02 -0700 (PDT)
Received-SPF: pass (google.com: domain of
notif+uGGdmzFmwF_wGswPekhRmLOsP8BwR_mTYLAxBmqq5uNc9NXTlpprDrqv9Gx9WyuM5VCNnFqFrIxRXbd5SIAxChF_SODxiYD99_(_at_)bounce(_dot_)linkedin(_dot_)com
designates 64.74.220.81 as permitted sender)
Received: from bounce.linkedin.com (172.17.26.84)
by mail05-a-ab.linkedin.com with ESMTP; 25 Jun 2007 07:11:21 -0700
Now my question is that gmail has not included the LinkedIn server in the
SPF record but still the e-mail has passed the SPF test! What is the reason
behind this?
- --
Regards,
Prakhar
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