Re: [DNSOP] [dns-operations] dnsop-any-notimp violates the DNS standards

Tony Finch <dot@dotat.at> Mon, 09 March 2015 16:04 UTC

Return-Path: <fanf2@hermes.cam.ac.uk>
X-Original-To: dnsop@ietfa.amsl.com
Delivered-To: dnsop@ietfa.amsl.com
Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 793281A9072 for <dnsop@ietfa.amsl.com>; Mon, 9 Mar 2015 09:04:35 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -4.211
X-Spam-Level:
X-Spam-Status: No, score=-4.211 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_PASS=-0.001, T_RP_MATCHES_RCVD=-0.01] autolearn=ham
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id UZMoz9oRGmTd for <dnsop@ietfa.amsl.com>; Mon, 9 Mar 2015 09:04:33 -0700 (PDT)
Received: from ppsw-40.csi.cam.ac.uk (ppsw-40.csi.cam.ac.uk [131.111.8.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 726791A8F41 for <dnsop@ietf.org>; Mon, 9 Mar 2015 09:03:25 -0700 (PDT)
X-Cam-AntiVirus: no malware found
X-Cam-ScannerInfo: http://www.cam.ac.uk/cs/email/scanner/
Received: from hermes-1.csi.cam.ac.uk ([131.111.8.51]:34126) by ppsw-40.csi.cam.ac.uk (smtp.hermes.cam.ac.uk [131.111.8.156]:25) with esmtpa (EXTERNAL:fanf2) id 1YV09L-0002Uq-k4 (Exim 4.82_3-c0e5623) (return-path <fanf2@hermes.cam.ac.uk>); Mon, 09 Mar 2015 16:03:23 +0000
Received: from fanf2 by hermes-1.csi.cam.ac.uk (hermes.cam.ac.uk) with local id 1YV09L-0003Rs-7l (Exim 4.72) (return-path <fanf2@hermes.cam.ac.uk>); Mon, 09 Mar 2015 16:03:23 +0000
Date: Mon, 9 Mar 2015 16:03:23 +0000
From: Tony Finch <dot@dotat.at>
X-X-Sender: fanf2@hermes-1.csi.cam.ac.uk
To: Jared Mauch <jared@puck.nether.net>
In-Reply-To: <C1E660E6-CA88-4B7B-9567-5AC010F48304@puck.nether.net>
Message-ID: <alpine.LSU.2.00.1503091600270.10193@hermes-1.csi.cam.ac.uk>
References: <20150309110803.4516.qmail@cr.yp.to> <alpine.LSU.2.00.1503091438050.23307@hermes-1.csi.cam.ac.uk> <C1E660E6-CA88-4B7B-9567-5AC010F48304@puck.nether.net>
User-Agent: Alpine 2.00 (LSU 1167 2008-08-23)
MIME-Version: 1.0
Content-Type: MULTIPART/MIXED; BOUNDARY="1870869256-783180987-1425917003=:10193"
Sender: Tony Finch <fanf2@hermes.cam.ac.uk>
Archived-At: <http://mailarchive.ietf.org/arch/msg/dnsop/JIuEGLQqVfZUuIRkhwnwosML36g>
Cc: dnsop@ietf.org, dns-operations@dns-oarc.net
Subject: Re: [DNSOP] [dns-operations] dnsop-any-notimp violates the DNS standards
X-BeenThere: dnsop@ietf.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: IETF DNSOP WG mailing list <dnsop.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/dnsop>, <mailto:dnsop-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/dnsop/>
List-Post: <mailto:dnsop@ietf.org>
List-Help: <mailto:dnsop-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/dnsop>, <mailto:dnsop-request@ietf.org?subject=subscribe>
X-List-Received-Date: Mon, 09 Mar 2015 16:04:35 -0000

Jared Mauch <jared@puck.nether.net> wrote:
>
> Even ignoring if qmail is “broken”.  (I would rather classify it as, could do
> better)

Yes.

> dnsop-any-notimp violates the principle of least surprise in technology by
> returning NOTIMP where Paul Vixie suggested NOERROR/ANCOUNT=0 would be more
> appropriate with the existing definitions.

This would have the amusing effect of disabling qmail's address
canonicalization without patching qmail.

Tony.
-- 
f.anthony.n.finch  <dot@dotat.at>  http://dotat.at/
Rockall, Malin: Cyclonic in north Rockall at first, otherwise westerly or
southwesterly severe gale 9 to violent storm 11, decreasing 5 or 6. High or
very high, becoming very rough. Squally showers. Good, occasionally poor.