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

David Nicol <davidnicol@gmail.com> Sat, 20 June 2009 23:06 UTC

Return-Path: <davidnicol@gmail.com>
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 A35873A6831 for <asrg@core3.amsl.com>; Sat, 20 Jun 2009 16:06:16 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.599
X-Spam-Level:
X-Spam-Status: No, score=-2.599 tagged_above=-999 required=5 tests=[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 j0laByj4S3ck for <asrg@core3.amsl.com>; Sat, 20 Jun 2009 16:06:16 -0700 (PDT)
Received: from mail-yx0-f198.google.com (mail-yx0-f198.google.com [209.85.210.198]) by core3.amsl.com (Postfix) with ESMTP id CCC903A67B2 for <asrg@irtf.org>; Sat, 20 Jun 2009 16:06:15 -0700 (PDT)
Received: by yxe36 with SMTP id 36so3566059yxe.15 for <asrg@irtf.org>; Sat, 20 Jun 2009 16:06:28 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :from:date:message-id:subject:to:content-type :content-transfer-encoding; bh=sf4eo1kMTCC4LVtDDOB74YzZecQzJHfdOi7C3KwZx+w=; b=eGt87cmRO7UlvJqeqeScV/bwnCDfTJYZSk12dfBWMXB8YEExs3h6fIS7/NnydGRcdl qa+E4SSrsjwxTEGqhyZ+rC+z/botkYyGwdp1WI5H9SysBRdCSJFziDCwJEqC9lsfNvyC yFCJU2P31579Kt5b2t5nuIZGKvjdSMH2kd+e4=
DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :content-type:content-transfer-encoding; b=XYlVpiRLJvm/yg1f8GNArzU9aLZ+wyKfpcDA6D1DCx4++BQoVloMn+RpErfwA3JBYD /lFwHtiwPZNicpkIY05OTLTZXqwAnfz6EHTG/vLevrgQQQ+SgWBiT5+CFvTefZq2Bd8c 3mzWYZObHN6cOjUajPD6ZLLofEsDCUM07NQNE=
MIME-Version: 1.0
Received: by 10.150.152.3 with SMTP id z3mr8435101ybd.90.1245539188137; Sat, 20 Jun 2009 16:06:28 -0700 (PDT)
In-Reply-To: <4A3D366E.2020304@tana.it>
References: <9112777.1871245190785748.JavaMail.franck@iphone-4.genius.local> <4D8E56D2-CB37-4713-94E5-0F0C2A1B1F94@blighty.com> <2F26F23C-F1B4-4FD4-BAEB-53168072FF5D@mail-abuse.org> <200906180105.VAA21834@Sparkle.Rodents-Montreal.ORG> <C8F0F10E-E1A4-4D25-AF20-31E3F0DB68DF@mail-abuse.org> <200906182044.QAA05200@Sparkle.Rodents-Montreal.ORG> <FED77586-8800-4BA6-99EA-30A1D9C089B6@mail-abuse.org> <200906190149.VAA06902@Sparkle.Rodents-Montreal.ORG> <B5252B96-F0AB-4D4A-A0DA-8314AA8E038F@mail-abuse.org> <4A3D366E.2020304@tana.it>
From: David Nicol <davidnicol@gmail.com>
Date: Sat, 20 Jun 2009 18:06:08 -0500
Message-ID: <934f64a20906201606pff54ca3y904da141013f1d2a@mail.gmail.com>
To: Anti-Spam Research Group - IRTF <asrg@irtf.org>
Content-Type: text/plain; charset=UTF-8
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: Sat, 20 Jun 2009 23:06:16 -0000

On Sat, Jun 20, 2009 at 2:20 PM, Alessandro Vesely<vesely@tana.it> wrote:
> However, in practice one needs an email address to do any legitimate use of
> SMTP, and hence a domain is required.

There isn't any technical reason why MUA software can't do its own
delivery with today's technology.  The whole concept of "outbound MTA"
seems like a throwback. With the exception of delivery delays, but
having a MUA attempt its own delivery and then switch to the smarthost
on connection or other temporary failure wouldn't require any
inspiration.

As if web-service MUAs are going to fade away, which is doubtful.

-- 
"Of course you don't find it puzzling, YOU WROTE IT!" -- Michael G. Schwern