Re: [ietf-smtp] parsing SMTP replies (was: Proposed ESMTP keyword RCPTLIMIT}

Claus Assmann <ietf-smtp@esmtp.org> Tue, 16 March 2021 06:11 UTC

Return-Path: <ietf-smtp@esmtp.org>
X-Original-To: ietf-smtp@ietfa.amsl.com
Delivered-To: ietf-smtp@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 42FF93A1B61 for <ietf-smtp@ietfa.amsl.com>; Mon, 15 Mar 2021 23:11:45 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.898
X-Spam-Level:
X-Spam-Status: No, score=-1.898 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_NONE=0.001] autolearn=ham autolearn_force=no
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 mgiA9gMOagXk for <ietf-smtp@ietfa.amsl.com>; Mon, 15 Mar 2021 23:11:43 -0700 (PDT)
Received: from kiel.esmtp.org (kiel.esmtp.org [195.244.235.220]) (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 6F0D13A1B62 for <ietf-smtp@ietf.org>; Mon, 15 Mar 2021 23:11:42 -0700 (PDT)
Received: from kiel.esmtp.org (localhost. [127.0.0.1]) by kiel.esmtp.org (MeTA1-1.1.Alpha15.2) with ESMTPS (TLS=TLSv1.2, cipher=ECDHE-RSA-AES256-GCM-SHA384, bits=256, verify=OK) id S000000000004E7A500; Tue, 16 Mar 2021 07:11:39 +0100
Received: (from ca@localhost) by kiel.esmtp.org (8.16.0.41/8.12.10.Beta0/Submit) id 12G6BdUW064777 for ietf-smtp@ietf.org; Tue, 16 Mar 2021 07:11:39 +0100 (CET)
Date: Tue, 16 Mar 2021 07:11:39 +0100
From: Claus Assmann <ietf-smtp@esmtp.org>
To: ietf-smtp@ietf.org
Message-ID: <20210316061139.GA26514@kiel.esmtp.org>
Reply-To: ietf-smtp@ietf.org
Mail-Followup-To: ietf-smtp@ietf.org
References: <77B21231-47EA-4CA6-A665-5880B6A54D4D@wordtothewise.com> <20210312203224.F3739701E4C5@ary.qy> <01RWOUM3HK0Q005PTU@mauve.mrochek.com> <e6e5d166-ded5-b6c0-db9a-57c44e8bd92a@dcrocker.net> <01RWOX4A2CZG005PTU@mauve.mrochek.com> <CF0247A810AF9482CBB155E8@PSB> <01RWP85B98S4005PTU@mauve.mrochek.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <01RWP85B98S4005PTU@mauve.mrochek.com>
Archived-At: <https://mailarchive.ietf.org/arch/msg/ietf-smtp/dpeYAPUECI09YrHMOLxCGwqL-W0>
Subject: Re: [ietf-smtp] parsing SMTP replies (was: Proposed ESMTP keyword RCPTLIMIT}
X-BeenThere: ietf-smtp@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: "Discussion of issues related to Simple Mail Transfer Protocol \(SMTP\) \[RFC 821, RFC 2821, RFC 5321\]" <ietf-smtp.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/ietf-smtp>, <mailto:ietf-smtp-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/ietf-smtp/>
List-Post: <mailto:ietf-smtp@ietf.org>
List-Help: <mailto:ietf-smtp-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/ietf-smtp>, <mailto:ietf-smtp-request@ietf.org?subject=subscribe>
X-List-Received-Date: Tue, 16 Mar 2021 06:11:45 -0000

On Mon, Mar 15, 2021, Ned Freed wrote:

> Which establishes the precedent for parsing replies given a signal
> to do so.

draft-santos-smtpgrey has something like that for graylisting:
421 4.7.0 Come back later. retry=123
                           ^^^^^^^^^

-- 
Address is valid for this mailing list only, please do not reply
to it direcly, but to the list.