Re: [Asrg] What are the IPs that sends mail for a domain?
Alessandro Vesely <vesely@tana.it> Wed, 17 June 2009 13:32 UTC
Return-Path: <vesely@tana.it>
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 CACC43A6B07 for <asrg@core3.amsl.com>; Wed, 17 Jun 2009 06:32:58 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -0.595
X-Spam-Level:
X-Spam-Status: No, score=-0.595 tagged_above=-999 required=5 tests=[AWL=0.124, BAYES_00=-2.599, HELO_EQ_IT=0.635, HOST_EQ_IT=1.245]
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 YXrcZjSz+GDw for <asrg@core3.amsl.com>; Wed, 17 Jun 2009 06:32:57 -0700 (PDT)
Received: from wmail.tana.it (wmail.tana.it [62.94.243.226]) by core3.amsl.com (Postfix) with ESMTP id AF4463A693F for <asrg@irtf.org>; Wed, 17 Jun 2009 06:32:57 -0700 (PDT)
Received: from [172.25.197.158] (pcale.tana [172.25.197.158]) (AUTH: CRAM-MD5 ale@tana.it, TLS: TLS1.0, 256bits, RSA_AES_256_CBC_SHA1) by wmail.tana.it with esmtp; Wed, 17 Jun 2009 15:33:08 +0200 id 00000000005DC031.000000004A38F094.00006B8F
Message-ID: <4A38F094.1000005@tana.it>
Date: Wed, 17 Jun 2009 15:33:08 +0200
From: Alessandro Vesely <vesely@tana.it>
User-Agent: Thunderbird 2.0.0.21 (Windows/20090302)
MIME-Version: 1.0
To: asrg@irtf.org
References: <20090616225543.11524.qmail@simone.iecc.com> <628BBDFC-0DDE-47B6-BC41-EAF846EE9D5D@mail-abuse.org> <1245203745.93720.748.camel@legolas.orthanc.ca> <4A38629F.5040506@billmail.scconsult.com>
In-Reply-To: <4A38629F.5040506@billmail.scconsult.com>
Content-Type: text/plain; charset="us-ascii"; format="flowed"
Content-Transfer-Encoding: 7bit
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 13:32:58 -0000
Bill Cole wrote: > Lyndon Nerenberg wrote, On 6/16/09 9:55 PM: >> 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? > > I can't testify to what he meant, but I think what he is actually saying > is that if you have a machine that says "EHLO some.name" then there > should be both a MX record for some.name and a SRV record for > _client._smtp.some.name (i.e. a CSV/CSA record). However, the standard requires that it says "EHLO host-at.some.name". It is a seemingly simple task to drop the leftmost label(s) so as to obtain the mail domain, but doing that properly requires a zone cut algorithm that most servers miss. > That doesn't mean requiring inbound SMTP on every outbound, it means > requiring an affirmation in DNS that a name can be used in EHLO by a > particular IP address and a way to get mail to the responsible party for > the machine(s) using that name in EHLO. This is an admirable goal. A > weaker goal would be to get people running non-spamming mail servers to > follow the existing accepted standard of using a valid resolvable FQDN > in EHLO. If we have a weaker goal and an admirable one, we're better off if they don't conflict with each other. We cannot ask for a domain name after EHLO, except for tiny ESPs whose domain name, host name, and IP address are the same thing. If we need the domain name, we can either mandate the zone cut algorithm, or use a different verb than EHLO.
- [Asrg] What are the IPs that sends mail for a dom… Franck Martin
- Re: [Asrg] What are the IPs that sends mail for a… John Levine
- Re: [Asrg] What are the IPs that sends mail for a… SM
- Re: [Asrg] What are the IPs that sends mail for a… John Johnson
- Re: [Asrg] What are the IPs that sends mail for a… Daniel Feenberg
- Re: [Asrg] What are the IPs that sends mail for a… Douglas Otis
- Re: [Asrg] What are the IPs that sends mail for a… Lyndon Nerenberg
- Re: [Asrg] What are the IPs that sends mail for a… Bill Cole
- Re: [Asrg] What are the IPs that sends mail for a… Franck Martin
- Re: [Asrg] What are the IPs that sends mail for a… Bill Cole
- Re: [Asrg] What are the IPs that sends mail for a… der Mouse
- Re: [Asrg] What are the IPs that sends mail for a… Franck Martin
- Re: [Asrg] What are the IPs that sends mail for a… Bill Cole
- Re: [Asrg] What are the IPs that sends mail for a… Franck Martin
- Re: [Asrg] What are the IPs that sends mail for a… John Levine
- Re: [Asrg] reject and DSN, was What are the IPs John Levine
- Re: [Asrg] What are the IPs that sends mail for a… Ian Eiloart
- Re: [Asrg] What are the IPs that sends mail for a… Ian Eiloart
- Re: [Asrg] What are the IPs that sends mail for a… Ian Eiloart
- Re: [Asrg] What are the IPs that sends mail for a… Ian Eiloart
- Re: [Asrg] What are the IPs that sends mail for a… Dotzero
- Re: [Asrg] What are the IPs that sends mail for a… Seth
- Re: [Asrg] What are the IPs that sends mail for a… Alessandro Vesely
- Re: [Asrg] What are the IPs that sends mail for a… Paul Russell
- Re: [Asrg] What are the IPs that sends mail for a… Jeff Macdonald
- Re: [Asrg] What are the IPs that sends mail for a… Steve Atkins
- Re: [Asrg] What are the IPs that sends mail for a… der Mouse
- Re: [Asrg] What are the IPs that sends mail for a… Daniel Feenberg
- Re: [Asrg] What are the IPs that sends mail for a… der Mouse
- Re: [Asrg] What are the IPs that sends mail for a… Steve Atkins
- Re: [Asrg] What are the IPs that sends mail for a… Lyndon Nerenberg
- Re: [Asrg] What are the IPs that sends mail for a… Alessandro Vesely
- Re: [Asrg] What are the IPs that sends mail for a… Douglas Otis
- Re: [Asrg] What are the IPs that sends mail for a… J.D. Falk
- Re: [Asrg] What are the IPs that sends mail for a… John Levine
- Re: [Asrg] What are the IPs that sends mail for a… John Levine
- Re: [Asrg] What are the IPs that sends mail for a… Dotzero
- Re: [Asrg] What are the IPs that sends mail for a… der Mouse
- Re: [Asrg] What are the IPs that sends mail for a… Douglas Otis
- Re: [Asrg] What are the IPs that sends mail for a… der Mouse
- Re: [Asrg] What are the IPs that sends mail for a… Rich Kulawiec
- Re: [Asrg] What are the IPs that sends mail for a… Ian Eiloart
- Re: [Asrg] What are the IPs that sends mail for a… Douglas Otis
- Re: [Asrg] What are the IPs that sends mail for a… der Mouse
- Re: [Asrg] What are the IPs that sends mail for a… Rich Kulawiec
- Re: [Asrg] What are the IPs that sends mail for a… Rich Kulawiec
- Re: [Asrg] What are the IPs that sends mail for a… Daniel Feenberg
- Re: [Asrg] What are the IPs that sends mail for a… John Levine
- Re: [Asrg] What are the IPs that sends mail for a… der Mouse
- Re: [Asrg] What are the IPs that sends mail for a… Douglas Otis
- Re: [Asrg] What are the IPs that sends mail for a… Douglas Otis
- Re: [Asrg] What are the IPs that sends mail for a… Alessandro Vesely
- Re: [Asrg] What are the IPs that sends mail for a… der Mouse
- Re: [Asrg] What are the IPs that sends mail for a… Bill Cole
- Re: [Asrg] What are the IPs that sends mail for a… Alessandro Vesely
- Re: [Asrg] What are the IPs that sends mail for a… Ian Eiloart
- Re: [Asrg] What are the IPs that sends mail for a… Ian Eiloart
- Re: [Asrg] What are the IPs that sends mail for a… Ian Eiloart
- Re: [Asrg] What are the IPs that sends mail for a… John Levine
- [Asrg] Proposed corollary to Godwin's law John Levine
- Re: [Asrg] What are the IPs that sends mail for a… Alessandro Vesely
- Re: [Asrg] What are the IPs that sends mail for a… David Wilson
- Re: [Asrg] What are the IPs that sends mail for a… der Mouse
- Re: [Asrg] What are the IPs that sends mail for a… der Mouse
- Re: [Asrg] What are the IPs that sends mail for a… J.D. Falk
- Re: [Asrg] What are the IPs that sends mail for a… Douglas Otis
- Re: [Asrg] What are the IPs that sends mail for a… Alessandro Vesely
- Re: [Asrg] What are the IPs that sends mail for a… Franck Martin
- Re: [Asrg] What are the IPs that sends mail for a… Steve Atkins
- Re: [Asrg] What are the IPs that sends mail for a… David Nicol
- Re: [Asrg] What are the IPs that sends mail for a… Steve Atkins
- Re: [Asrg] What are the IPs that sends mail for a… Paul Russell
- Re: [Asrg] What are the IPs that sends mail for a… Alessandro Vesely
- Re: [Asrg] What are the IPs that sends mail for a… John Levine
- Re: [Asrg] What are the IPs that sends mail for a… John Levine
- Re: [Asrg] What are the IPs that sends mail for a… Douglas Otis
- Re: [Asrg] What are the IPs that sends mail for a… Ian Eiloart
- Re: [Asrg] What are the IPs that sends mail for a… Ian Eiloart
- Re: [Asrg] What are the IPs that sends mail for a… Ian Eiloart
- Re: [Asrg] What are the IPs that sends mail for a… Ian Eiloart
- Re: [Asrg] What are the IPs that sends mail for a… Alessandro Vesely
- Re: [Asrg] What are the IPs that sends mail for a… der Mouse
- Re: [Asrg] What are the IPs that sends mail for a… Ian Eiloart
- Re: [Asrg] What are the IPs that sends mail for a… Gordon Peterson
- Re: [Asrg] reject and DSN, was What are the IPs John Levine
- Re: [Asrg] What are the IPs that sends mail for a… Alessandro Vesely
- Re: [Asrg] What are the IPs that sends mail for a… Ian Eiloart
- Re: [Asrg] What are the IPs that sends mail for a… Ian Eiloart
- Re: [Asrg] What are the IPs that sends mail for a… Ian Eiloart
- Re: [Asrg] "Affiliation" John Leslie
- Re: [Asrg] What are the IPs that sends mail for a… Douglas Otis
- Re: [Asrg] What are the IPs that sends mail for a… Gordon Peterson
- Re: [Asrg] What are the IPs that sends mail for a… Douglas Otis
- Re: [Asrg] What are the IPs that sends mail for a… Dotzero
- Re: [Asrg] What are the IPs that sends mail for a… Rich Kulawiec
- Re: [Asrg] What are the IPs that sends mail for a… Steve Atkins
- Re: [Asrg] What are the IPs that sends mail for a… Douglas Otis
- Re: [Asrg] What are the IPs that sends mail for a… Seth
- Re: [Asrg] What are the IPs that sends mail for a… Alessandro Vesely
- Re: [Asrg] "Affiliation" Alessandro Vesely
- Re: [Asrg] reject and DSN, was What are the IPs Ian Eiloart
- Re: [Asrg] What are the IPs that sends mail for a… Ian Eiloart
- Re: [Asrg] What are the IPs that sends mail for a… Alessandro Vesely
- Re: [Asrg] Proposed corollary to Godwin's law mathew
- Re: [Asrg] What are the IPs that sends mail for a… Bill Cole
- Re: [Asrg] What are the IPs that sends mail for a… Bill Cole
- Re: [Asrg] What are the IPs that sends mail for a… Bill Cole
- Re: [Asrg] What are the IPs that sends mail for a… John Levine
- Re: [Asrg] What are the IPs that sends mail for a… Alessandro Vesely
- Re: [Asrg] What are the IPs that sends mail for a… Ian Eiloart
- Re: [Asrg] What are the IPs that sends mail for a… Rich Kulawiec
- Re: [Asrg] What are the IPs that sends mail for a… Dotzero
- Re: [Asrg] What are the IPs that sends mail for a… John Leslie
- Re: [Asrg] What are the IPs that sends mail for a… John Leslie
- Re: [Asrg] What are the IPs that sends mail for a… Ian Eiloart
- Re: [Asrg] reject and DSN, was What are the IPs Ian Eiloart
- Re: [Asrg] What are the IPs that sends mail for a… Alessandro Vesely
- Re: [Asrg] What are the IPs that sends mail for a… Dotzero
- Re: [Asrg] What are the IPs that sends mail for a… John Leslie
- Re: [Asrg] What are the IPs that sends mail for a… Dotzero
- Re: [Asrg] What are the IPs that sends mail for a… Alessandro Vesely
- Re: [Asrg] What are the IPs that sends mail for a… John Leslie
- Re: [Asrg] What are the IPs that sends mail for a… Dotzero
- Re: [Asrg] What are the IPs that sends mail for a… Alessandro Vesely
- Re: [Asrg] What are the IPs that sends mail for a… Douglas Otis
- Re: [Asrg] What are the IPs that sends mail for a… Douglas Otis
- Re: [Asrg] reject and DSN, was What are the IPs John Levine
- Re: [Asrg] What are the IPs that sends mail for a… Ian Eiloart
- Re: [Asrg] What are the IPs that sends mail for a… Ian Eiloart
- Re: [Asrg] What are the IPs that sends mail for a… Ian Eiloart
- Re: [Asrg] What are the IPs that sends mail for a… Ian Eiloart
- Re: [Asrg] What are the IPs that sends mail for a… Ian Eiloart
- Re: [Asrg] reject and DSN, was What are the IPs Ian Eiloart
- Re: [Asrg] What are the IPs that sends mail for a… Alessandro Vesely
- Re: [Asrg] reject and DSN, was What are the IPs Chris Lewis
- Re: [Asrg] reject and DSN, was What are the IPs Alessandro Vesely
- Re: [Asrg] What are the IPs that sends mail for a… Steve Atkins
- Re: [Asrg] reject and DSN, was What are the IPs John Levine
- Re: [Asrg] What are the IPs that sends mail for a… Bill Cole
- Re: [Asrg] What are the IPs that sends mail for a… Chris Lewis
- Re: [Asrg] What are the IPs that sends mail for a… Ian Eiloart
- Re: [Asrg] What are the IPs that sends mail for a… Chris Lewis
- Re: [Asrg] What are the IPs that sends mail for a… Chris Lewis
- Re: [Asrg] What are the IPs that sends mail for a… Douglas Otis
- Re: [Asrg] What are the IPs that sends mail for a… Bill Cole
- Re: [Asrg] What are the IPs that sends mail for a… Ian Eiloart
- Re: [Asrg] What are the IPs that sends mail for a… Alessandro Vesely
- Re: [Asrg] What are the IPs that sends mail for a… Douglas Otis
- Re: [Asrg] What are the IPs that sends mail for a… Peter Koch
- Re: [Asrg] What are the IPs that sends mail for a… Douglas Otis
- Re: [Asrg] What are the IPs that sends mail for a… David Nicol