Re: [ietf-smtp] [Emailcore] Proposed ESMTP keyword RCPTLIMIT

Dave Crocker <dhc@dcrocker.net> Tue, 20 April 2021 13:42 UTC

Return-Path: <dhc@dcrocker.net>
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 391C03A232E for <ietf-smtp@ietfa.amsl.com>; Tue, 20 Apr 2021 06:42:36 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.1
X-Spam-Level:
X-Spam-Status: No, score=-2.1 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, NICE_REPLY_A=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=dcrocker.net
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 PaPobONb-aSq for <ietf-smtp@ietfa.amsl.com>; Tue, 20 Apr 2021 06:42:31 -0700 (PDT)
Received: from butterfly.birch.relay.mailchannels.net (butterfly.birch.relay.mailchannels.net [23.83.209.27]) (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 8D8F63A2326 for <ietf-smtp@ietf.org>; Tue, 20 Apr 2021 06:42:30 -0700 (PDT)
X-Sender-Id: hostingeremail|x-authsender|dhc@dcrocker.net
Received: from relay.mailchannels.net (localhost [127.0.0.1]) by relay.mailchannels.net (Postfix) with ESMTP id EE59F223A6; Tue, 20 Apr 2021 13:42:28 +0000 (UTC)
Received: from nl-srv-smtpout4.hostinger.io (100-96-18-71.trex.outbound.svc.cluster.local [100.96.18.71]) (Authenticated sender: hostingeremail) by relay.mailchannels.net (Postfix) with ESMTPA id F1B93225BC; Tue, 20 Apr 2021 13:42:27 +0000 (UTC)
X-Sender-Id: hostingeremail|x-authsender|dhc@dcrocker.net
Received: from nl-srv-smtpout4.hostinger.io ([UNAVAILABLE]. [145.14.159.244]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256) by 100.96.18.71 (trex/6.1.1); Tue, 20 Apr 2021 13:42:28 +0000
X-MC-Relay: Neutral
X-MailChannels-SenderId: hostingeremail|x-authsender|dhc@dcrocker.net
X-MailChannels-Auth-Id: hostingeremail
X-Harmony-Callous: 6a569bc369a2bc5c_1618926148661_3510454896
X-MC-Loop-Signature: 1618926148661:3929137717
X-MC-Ingress-Time: 1618926148661
Received: from [192.168.0.111] (108-226-162-63.lightspeed.sntcca.sbcglobal.net [108.226.162.63]) (Authenticated sender: dhc@dcrocker.net) by nl-srv-smtpout4.hostinger.io (smtp.hostinger.com) with ESMTPSA id AEED6318C1E9; Tue, 20 Apr 2021 13:42:24 +0000 (UTC)
DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=dcrocker.net; s=hostingermail-a; t=1618926146; bh=cQsbQ+3fNhrQuEERmqnWH3gfQj+talGjR/MlwW1yrCs=; h=Reply-To:Subject:To:References:From:Date:In-Reply-To; b=D+JmK21ofbmy1HE10oE706xd2X68OtMjIxCMZaoAB7m/+GDTB8W9Pr0GmsOyD+dZr msNngxogzIPkbNqH4Ce3hbqVeQrnP7Ae6GD55X9K10nst2GeID8PsWzedBQqzJ6ILN 2gMz+FHYd1e/ZerFLv3VNOZ0LPndFM4BtygKYVwz4q169PJcsDz6HJGTcHhI+qEvHD hdPQAxnkD2KU//WF+t4ZtDXWNBKPbu4St5b+reJY94wUsNat1EHVXmELombRdPlSrk 62yyOhivaXcs7C7Y3igIAA9Gfxrp53kX+XsYVqkvBnIgAiQGl7wralBMLgiXCBZx2Q XYqUVU+EJSSvw==
Reply-To: dcrocker@bbiw.net
To: Laura Atkins <laura@wordtothewise.com>, ietf-smtp@ietf.org
References: <cone.1615844513.220592.51342.1004@monster.email-scan.com> <20210315234648.563C0708B340@ary.qy> <CAO=DXp-+fJwsNegzu3zgwDLtCcSF104AUF=i+_GMgSYVBAKjWg@mail.gmail.com> <01RY24IJ225Q0085YQ@mauve.mrochek.com> <CAO=DXp-VSxeTsWZFAms7WX-jonkSiyGgKV5T_17VGhq6bcsMdg@mail.gmail.com> <cone.1618877363.380527.55051.1004@monster.email-scan.com> <F8AC11B4-1C30-4DE6-AE70-F91994EE7539@wordtothewise.com>
From: Dave Crocker <dhc@dcrocker.net>
Organization: Brandenburg InternetWorking
Message-ID: <07c9cb68-14ca-5e75-64ac-d86f78904b25@dcrocker.net>
Date: Tue, 20 Apr 2021 06:42:21 -0700
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.9.1
MIME-Version: 1.0
In-Reply-To: <F8AC11B4-1C30-4DE6-AE70-F91994EE7539@wordtothewise.com>
Content-Type: text/plain; charset="utf-8"; format="flowed"
Content-Language: en-US
Content-Transfer-Encoding: 8bit
Archived-At: <https://mailarchive.ietf.org/arch/msg/ietf-smtp/z9WvltBdSJ9-HKot5AX390jdBj0>
Subject: Re: [ietf-smtp] [Emailcore] 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, 20 Apr 2021 13:42:36 -0000

On 4/20/2021 2:17 AM, Laura Atkins wrote:
> I don’t think a discussion about why or if it’s sensible will make any 
> difference. The companies who are closing the connections after X number 
> of messages (5, 10 and 20 are all used) are not likely to either defend 
> their technical decisions to the IETF or change their behavior after a 
> decade and at least one whole infrastructure rearchitecture.
> 
> What we should be doing is figuring out how to make these limits more 
> clear to senders.


+1

d/

-- 
Dave Crocker
Brandenburg InternetWorking
bbiw.net