Re: [ietf-smtp] Make username optional in email addresses

Keith Moore <moore@network-heretics.com> Fri, 24 February 2023 11:27 UTC

Return-Path: <moore@network-heretics.com>
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 3E4CEC14CEFD for <ietf-smtp@ietfa.amsl.com>; Fri, 24 Feb 2023 03:27:52 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.594
X-Spam-Level:
X-Spam-Status: No, score=-2.594 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, NICE_REPLY_A=-0.001, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_ZEN_BLOCKED_OPENDNS=0.001, SPF_NONE=0.001, URIBL_BLOCKED=0.001, URIBL_DBL_BLOCKED_OPENDNS=0.001, URIBL_ZEN_BLOCKED_OPENDNS=0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=messagingengine.com
Received: from mail.ietf.org ([50.223.129.194]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id CHEtbo65_bnV for <ietf-smtp@ietfa.amsl.com>; Fri, 24 Feb 2023 03:27:48 -0800 (PST)
Received: from out4-smtp.messagingengine.com (out4-smtp.messagingengine.com [66.111.4.28]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 37DC5C14F748 for <ietf-smtp@ietf.org>; Fri, 24 Feb 2023 03:27:47 -0800 (PST)
Received: from compute6.internal (compute6.nyi.internal [10.202.2.47]) by mailout.nyi.internal (Postfix) with ESMTP id 56C8E5C01E4 for <ietf-smtp@ietf.org>; Fri, 24 Feb 2023 06:27:45 -0500 (EST)
Received: from mailfrontend1 ([10.202.2.162]) by compute6.internal (MEProxy); Fri, 24 Feb 2023 06:27:45 -0500
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-transfer-encoding:content-type :date:date:feedback-id:feedback-id:from:from:in-reply-to :in-reply-to:message-id:mime-version:references:reply-to:sender :subject:subject:to:to:x-me-proxy:x-me-proxy:x-me-sender :x-me-sender:x-sasl-enc; s=fm1; t=1677238065; x=1677324465; bh=N BDEVNVVa6WudB887uhIXhFxMPlN/54ELOV/eLzq//8=; b=lOLMPW2c7vdeFmjpQ 8XxKzVk46DQhJ58Vhwc7CiXGhZ6touQ8oaFV/+1vocfGWYqa2cWHr/H43Bj00c3D wFHIw3zbZs2ywQ4zAuUgbeRc/xZG8KlPulQs1L8RhxgC/LTxQ1d0frIY2yZPCADF Cx9Dv05ELh5miNtFLfgTfCY56o54pEKrLDZRvenDwBDQaa12tJrEdKrJb9EcKW4z 62mASaseH+bjWY2fOHL+M1+W3kjAriaCnmDEihQ3dMJjhJpyfuscfdWsiDp282iM zkqqbgLZ+Vx/D0+CKCVGXdZBaabJEVrwzrvzZVgwxtDCYMsxWZAAyJo7kjC8Pmlu iU5hQ==
X-ME-Sender: <xms:MZ_4Y2Ywl_IMmbJZ8ZtHWpeGfdO92qWnb1uf5kH56R21YIU2OR8EBg> <xme:MZ_4Y5Zb2XkNz882BnQe8FP7zmDfY53Bn91BiMT87vGm_2lX98SkmVJM5ohM-fcwr HCB3cRO80rKgA>
X-ME-Received: <xmr:MZ_4Yw8bfaNw3j6TMIgsTH0kU-l8xtIzwjNQifEABYjYX-Giq3vwzcNgf99CL_BZ-oOza4zc4kfaZhF019fFjUIAVdMCZYYxSFfc2q-T107N_M-Hqu4fTA>
X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvhedrudekfedgvdegucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucenucfjughrpefkffggfgfuvfhfhfgjtgfgsehtje ertddtfeejnecuhfhrohhmpefmvghithhhucfoohhorhgvuceomhhoohhrvgesnhgvthif ohhrkhdqhhgvrhgvthhitghsrdgtohhmqeenucggtffrrghtthgvrhhnpefhieekgfeuvd fgheettedtvdeiveegvdduvdefueefieefudejfeduvdehudeiieenucevlhhushhtvghr ufhiiigvpedtnecurfgrrhgrmhepmhgrihhlfhhrohhmpehmohhorhgvsehnvghtfihorh hkqdhhvghrvghtihgtshdrtghomh
X-ME-Proxy: <xmx:MZ_4Y4prSzswyROihZzwgDmvzBuCt9zUlaYgJel7pIEWgGrUotRP9Q> <xmx:MZ_4YxqKNg2vI_ugoF6Fogw5gnFJBhjYaEdL3yRXe7huEJtixxXh_Q> <xmx:MZ_4Y2TFKv3kbQijcS8LcTfvHhiBfNtw4QbwKq_28Ss_ksYFJTCOyw> <xmx:MZ_4Y-0BmxFVwWBKWdj4f0TAN_20eHVKvw8yF1DeOai3IKboABlerg>
Feedback-ID: i5d8c41f0:Fastmail
Received: by mail.messagingengine.com (Postfix) with ESMTPA for <ietf-smtp@ietf.org>; Fri, 24 Feb 2023 06:27:44 -0500 (EST)
Message-ID: <cdf69e92-d1a7-24ed-5735-9a1a39dcd62f@network-heretics.com>
Date: Fri, 24 Feb 2023 06:27:44 -0500
MIME-Version: 1.0
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.7.1
Content-Language: en-US
To: ietf-smtp@ietf.org
References: <CAG6nNWe_7-JN4mzTcsfHBj-cO9qO8twXr+GOg=kiQ8e5XataPA@mail.gmail.com> <1866188dd88.2923.9bfe8bcc586ac955e423c0e3d5444448@pscs.co.uk> <CAG6nNWezvc+dEV=qMop31YtwNVz5M46-tfqto5fpPq9ePgt3eA@mail.gmail.com>
From: Keith Moore <moore@network-heretics.com>
In-Reply-To: <CAG6nNWezvc+dEV=qMop31YtwNVz5M46-tfqto5fpPq9ePgt3eA@mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"; format="flowed"
Content-Transfer-Encoding: 7bit
Archived-At: <https://mailarchive.ietf.org/arch/msg/ietf-smtp/Ce6kTYAZ3x5Tst4KNNSs3c6ZUL4>
Subject: Re: [ietf-smtp] Make username optional in email addresses
X-BeenThere: ietf-smtp@ietf.org
X-Mailman-Version: 2.1.39
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: Fri, 24 Feb 2023 11:27:52 -0000

On 2/22/23 15:44, Scott Antipa wrote:

> This is really interesting! And doesnt break things. I would be 
> curious to hear your thoughts on some of the commenters to your post.

Except that it actually does break things.