Perhaps because your "ISP" is using Microsoft?
$ dig +short mx btconnect.com
1 btconnect-com.mail.eo.outlook.com.
outlook.com (aka bigfish.com) is, fairly obviously, Microsoft.
Why it's failing SPF is probably something you'll need to take up with BT.
Scott.
On Fri, Oct 21, 2011 at 8:41 AM, t.petch <ietfa(_at_)btconnect(_dot_)com> wrote:
Well, I would prefer an alternative explanation, for why all my IRTF (and
IETF)
e-mail now shows 'SPF fail' because it has come to my ISP (British Telecom)
from
157.55.224.141,
and ARIN WHOIS lists 157.55.224.141 as an address allocated to Microsoft,
which
is not listed as a permitted sender for irtf.org.
Any ideas?
Tom Petch
<snip>
Received-SPF: fail (mail9-am1: domain of irtf.org does not designate
157.55.224.141 as permitted sender) client-ip=157.55.224.141;
envelope-from=asrg-bounces(_at_)irtf(_dot_)org;
helo=DB3PRD0702HT003.eurprd07.prod.outlook.com ;.outlook.com ;
Received: from mail9-am1 (localhost.localdomain [127.0.0.1]) by mail9-am1
(MessageSwitch) id 1318964619898891_21731; Tue, 18 Oct 2011 19:03:39 +0000
(UTC)
Received: from AM1EHSMHS011.bigfish.com (unknown [10.3.201.252]) by
mail9-am1.bigfish.com (Postfix) with ESMTP id D38CC1150054 for
<ietfa(_at_)btconnect(_dot_)com>; Tue, 18 Oct 2011 19:03:39 +0000 (UTC)
Received: from DB3PRD0702HT003.eurprd07.prod.outlook.com (157.55.224.141)
by
AM1EHSMHS011.bigfish.com (10.3.207.111) with Microsoft SMTP Server (TLS)
id
14.1.225.22; Tue, 18 Oct 2011 19:03:39 +0000
Received: from mail64-va3-R.bigfish.com (216.32.180.112) by
DB3PRD0702HT003.eurprd07.prod.outlook.com (10.3.4.151) with Microsoft
SMTP
Server (TLS) id 14.1.225.71; Tue, 18 Oct 2011 19:03:38 +0000
Received: from mail64-va3 (localhost.localdomain [127.0.0.1]) by
mail64-va3-R.bigfish.com (Postfix) with ESMTP id 209C74B8376 for
<ietfa(_at_)btconnect(_dot_)com>; Tue, 18 Oct 2011 19:03:37 +0000 (UTC)
X-FB-SS: 13,
Received: from mail64-va3 (localhost.localdomain [127.0.0.1]) by mail64-va3
(MessageSwitch) id 1318964522600467_28976; Tue, 18 Oct 2011 19:02:02 +0000
(UTC)
Received: from VA3EHSMHS029.bigfish.com (unknown [10.7.14.249]) by
mail64-va3.bigfish.com (Postfix) with ESMTP id 7505A1640051 for
<ietfa(_at_)btconnect(_dot_)com>; Tue, 18 Oct 2011 19:02:02 +0000 (UTC)
Received: from mail.ietf.org (12.22.58.30) by VA3EHSMHS029.bigfish.com
(10.7.99.39) with Microsoft SMTP Server id 14.1.225.22; Tue, 18 Oct 2011
19:01:55 +0000
Received: from ietfa.amsl.com (localhost [127.0.0.1]) by ietfa.amsl.com
(Postfix) with ESMTP id 4106021F8B88; Tue, 18 Oct 2011 12:01:36 -0700
(PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ietf.org; s=ietf1;
<snip>
X-Original-To: asrg(_at_)ietfa(_dot_)amsl(_dot_)com
Delivered-To: asrg(_at_)ietfa(_dot_)amsl(_dot_)com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com(Postfix)
with ESMTP id A551021F8B74 for <asrg(_at_)ietfa(_dot_)amsl(_dot_)com>; Tue,
18 Oct 2011
12:01:35 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -102.712
X-Spam-Level:
X-Spam-Status: No, score=-102.712 tagged_above=-999 required=5
tests=[AWL=-0.114, BAYES_00=-2.599, HTML_MESSAGE=0.001,
USER_IN_WHITELIST=-100]
Received: from mail.ietf.org ([12.22.58.30]) by localhost (ietfa.amsl.com
[127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 3XSv6ncXIa5s for
<asrg(_at_)ietfa(_dot_)amsl(_dot_)com>; Tue, 18 Oct 2011 12:01:34 -0700 (PDT)
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