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

Douglas Otis <dotis@mail-abuse.org> Wed, 17 June 2009 17:26 UTC

Return-Path: <dotis@mail-abuse.org>
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 91C083A6E8D for <asrg@core3.amsl.com>; Wed, 17 Jun 2009 10:26:19 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -6.323
X-Spam-Level:
X-Spam-Status: No, score=-6.323 tagged_above=-999 required=5 tests=[AWL=0.276, BAYES_00=-2.599, RCVD_IN_DNSWL_MED=-4]
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 LCBOXXFcfr1Y for <asrg@core3.amsl.com>; Wed, 17 Jun 2009 10:26:17 -0700 (PDT)
Received: from harry.mail-abuse.org (harry.mail-abuse.org [168.61.5.27]) by core3.amsl.com (Postfix) with ESMTP id 949163A6BBC for <asrg@irtf.org>; Wed, 17 Jun 2009 10:26:17 -0700 (PDT)
Received: from [IPv6:::1] (gateway1.sjc.mail-abuse.org [168.61.5.81]) by harry.mail-abuse.org (Postfix) with ESMTP id E45B2A94439 for <asrg@irtf.org>; Wed, 17 Jun 2009 17:25:49 +0000 (UTC)
Message-Id: <9B8DE3C5-5882-42E9-B400-A123C038EA4B@mail-abuse.org>
From: Douglas Otis <dotis@mail-abuse.org>
To: Anti-Spam Research Group - IRTF <asrg@irtf.org>
In-Reply-To: <1245203745.93720.748.camel@legolas.orthanc.ca>
Content-Type: text/plain; charset="US-ASCII"; format="flowed"; delsp="yes"
Content-Transfer-Encoding: 7bit
Mime-Version: 1.0 (Apple Message framework v935.3)
Date: Wed, 17 Jun 2009 10:25:49 -0700
References: <20090616225543.11524.qmail@simone.iecc.com> <628BBDFC-0DDE-47B6-BC41-EAF846EE9D5D@mail-abuse.org> <1245203745.93720.748.camel@legolas.orthanc.ca>
X-Mailer: Apple Mail (2.935.3)
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: Wed, 17 Jun 2009 17:26:19 -0000

On Jun 16, 2009, at 6:55 PM, Lyndon Nerenberg wrote:

> On Tue, 2009-06-16 at 17:24 -0700, Douglas Otis wrote:
>> IMHO, all outbound MTAs should be required to return CVS records  
>> for their EHLO name and offer MX records for their inbound.
>
> Doug, are you sure that's what you meant to say? The sentence is a  
> bit ambiguous. Are you really saying any host that sends mail (is an  
> SMTP client) MUST also host an listed SMTP server?

You are right.  This should have been pubic MTAs, meaning those that  
send email using port 25 without authentication.  All other sources  
should be restricted in some fashion, perhaps by ACLs or  
authentications.

-Doug