Re: [Asrg] What are the IPs that sends mail for a domain?

Ian Eiloart <iane@sussex.ac.uk> Thu, 18 June 2009 09:39 UTC

Return-Path: <iane@sussex.ac.uk>
X-Original-To: asrg@core3.amsl.com
Delivered-To: asrg@core3.amsl.com
Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id 5D4D23A6C9F for <asrg@core3.amsl.com>; Thu, 18 Jun 2009 02:39:40 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.553
X-Spam-Level:
X-Spam-Status: No, score=-2.553 tagged_above=-999 required=5 tests=[AWL=0.046, BAYES_00=-2.599]
Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id vkxM4LAZACga for <asrg@core3.amsl.com>; Thu, 18 Jun 2009 02:39:39 -0700 (PDT)
Received: from chip.uscs.susx.ac.uk (chip.uscs.susx.ac.uk [139.184.14.86]) by core3.amsl.com (Postfix) with ESMTP id 3C8DD3A6CAB for <asrg@irtf.org>; Thu, 18 Jun 2009 02:39:39 -0700 (PDT)
Received: from lewes.staff.uscs.susx.ac.uk ([139.184.134.43]:64375) by chip.uscs.susx.ac.uk with esmtpsa (TLSv1:AES256-SHA:256) (Exim 4.64) (envelope-from <iane@sussex.ac.uk>) id KLFHK6-00096N-R4 for asrg@irtf.org; Thu, 18 Jun 2009 10:40:55 +0100
Date: Thu, 18 Jun 2009 10:39:48 +0100
From: Ian Eiloart <iane@sussex.ac.uk>
Sender: iane@sussex.ac.uk
To: Anti-Spam Research Group - IRTF <asrg@irtf.org>
Message-ID: <2886F0CCE51E030268144878@lewes.staff.uscs.susx.ac.uk>
In-Reply-To: <20090617175534.5222.qmail@simone.iecc.com>
References: <20090617175534.5222.qmail@simone.iecc.com>
Originator-Info: login-token=Mulberry:01N0zBaKCtL814uRXKo3KqwTTbncTiwppyrLc=; token_authority=support@its.sussex.ac.uk
X-Mailer: Mulberry/4.0.8 (Mac OS X)
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii; format=flowed
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
X-Sussex: true
X-Sussex-transport: remote_smtp
Subject: Re: [Asrg] What are the IPs that sends mail for a domain?
X-BeenThere: asrg@irtf.org
X-Mailman-Version: 2.1.9
Precedence: list
Reply-To: Anti-Spam Research Group - IRTF <asrg@irtf.org>
List-Id: Anti-Spam Research Group - IRTF <asrg.irtf.org>
List-Unsubscribe: <http://www.irtf.org/mailman/listinfo/asrg>, <mailto:asrg-request@irtf.org?subject=unsubscribe>
List-Archive: <http://www.irtf.org/mail-archive/web/asrg>
List-Post: <mailto:asrg@irtf.org>
List-Help: <mailto:asrg-request@irtf.org?subject=help>
List-Subscribe: <http://www.irtf.org/mailman/listinfo/asrg>, <mailto:asrg-request@irtf.org?subject=subscribe>
X-List-Received-Date: Thu, 18 Jun 2009 09:39:40 -0000

Oddly, most of this thread isn't really relevant to the subject line.

The reason for asking the question is that we don't currently have widely 
published SPF records. If we did, then we wouldn't need IP address 
reputation for either IPV4 or IPV6. We'd just need the answer to two 
questions:

1. Does that IP address have permission to emit mail from the sender domain?
2. Do I want email from that sender? If the sender doesn't have a good 
reputation, perhaps the domain does? If the reputation is neutral, I'll 
take a good look at the content and the delivery rate.

Even the above isn't relevant to the OP, who just wanted to diagnose a 
delivery failure - but that is likely to have been a symptom of some 
anti-spam measure that wasn't domain reputation related.

-- 
Ian Eiloart
IT Services, University of Sussex
01273-873148 x3148
For new support requests, see http://www.sussex.ac.uk/its/help/