Re: [Tools-discuss] [Emailcore] emails being truncated

John Levine <johnl@taugh.com> Wed, 21 July 2021 21:21 UTC

Return-Path: <johnl@iecc.com>
X-Original-To: tools-discuss@ietfa.amsl.com
Delivered-To: tools-discuss@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id A0D133A2AC9 for <tools-discuss@ietfa.amsl.com>; Wed, 21 Jul 2021 14:21:31 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.099
X-Spam-Level:
X-Spam-Status: No, score=-2.099 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, HEADER_FROM_DIFFERENT_DOMAINS=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=iecc.com header.b=a6F9Tszv; dkim=pass (2048-bit key) header.d=taugh.com header.b=MM9WUEiv
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 WHWKFzdWypxz for <tools-discuss@ietfa.amsl.com>; Wed, 21 Jul 2021 14:21:25 -0700 (PDT)
Received: from gal.iecc.com (gal.iecc.com [IPv6:2001:470:1f07:1126:0:43:6f73:7461]) (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 0AB0F3A2ACE for <tools-discuss@ietf.org>; Wed, 21 Jul 2021 14:21:24 -0700 (PDT)
Received: (qmail 29096 invoked from network); 21 Jul 2021 21:21:22 -0000
DKIM-Signature: v=1; a=rsa-sha256; c=simple; d=iecc.com; h=date:message-id:from:to:cc:subject:in-reply-to:mime-version:content-type:content-transfer-encoding:cleverness; s=71a6.60f88fd2.k2107; bh=O1jD8bY6mKhYau8EHRL7V7zUdRiligEmY0dkICH3LiE=; b=a6F9TszvXV2ayJ9vbumwMgFuZa4zPswn9mEoQhzx9uTXTPU/z8osDbPsgdTRU7GJEFomu9zjJqCD5gTBra6ipjiyDNkKsrWraPg6TnYZH+W2k2vwXXhHo1fKrgjLe2hGcjPYkL9Asmt9+u602j4giiST+3R8LDed0Rpo8bio/Hnpdd5wJLS4IVtC9g52vt1MRXEBRZL/W1x6xJ4gszBUm1WBZdjT+sn2Osv5jET0ziBthu4bNGT9ueugEe525xrWoD/NNMlud24OwBrDObqyUIplOMhjQneXc8Q7iCOE6KoomqVv4nivpLZZ4xS3IgBC44VO4E0ngRXrRk5y9FgiFw==
DKIM-Signature: v=1; a=rsa-sha256; c=simple; d=taugh.com; h=date:message-id:from:to:cc:subject:in-reply-to:mime-version:content-type:content-transfer-encoding:cleverness; s=71a6.60f88fd2.k2107; bh=O1jD8bY6mKhYau8EHRL7V7zUdRiligEmY0dkICH3LiE=; b=MM9WUEivohFB0giegluAc5gKA1qSvdC4Eu+/DbLTG+iFKwerNPPf0FydI71E6kLwZDxgPGJYGOvCtImpC45FdgN4U9BzLAKAMbVliqlFBpKWuwdkgKt/dUUUdJzOhaRTIxwjBbkK4PRJ/G+BRizixZtT7C914B41D5Hnjw8Oru4g3OUVD+Y+QAcY7Z3btNyHcDx22eV/F0ShmraSTu7bVeFtePBGAHdnJzzzucpzNG/VW9EEDNsfqCU3a27jP+dnc08GovfPvgQ8S5d1VrtB4lSjMr99CaQRpMOMkMn85WgVjmw9UU2yUmoOjYCBmlqase3liYsd0j47VE3QYJu0eg==
Received: from ary.qy ([IPv6:2001:470:1f07:1126::78:696d:6170]) by imap.iecc.com ([IPv6:2001:470:1f07:1126::78:696d:6170]) with ESMTPS (TLS1.2 ECDHE-RSA AES-256-GCM AEAD) via TCP6; 21 Jul 2021 21:21:22 -0000
Received: by ary.qy (Postfix, from userid 501) id 055B224D27E8; Wed, 21 Jul 2021 17:21:21 -0400 (EDT)
Date: 21 Jul 2021 17:21:21 -0400
Message-Id: <20210721212122.055B224D27E8@ary.qy>
From: "John Levine" <johnl@taugh.com>
To: tools-discuss@ietf.org
In-Reply-To: <20210721184101.GR57276@faui48e.informatik.uni-erlangen.de>
Organization: Taughannock Networks
X-Headerized: yes
Cleverness: minimal
Mime-Version: 1.0
Content-type: text/plain; charset=utf-8
Content-transfer-encoding: 8bit
Archived-At: <https://mailarchive.ietf.org/arch/msg/tools-discuss/jMsVKiM-VQnj74HaBRApi_ev1KA>
Subject: Re: [Tools-discuss] [Emailcore] emails being truncated
X-BeenThere: tools-discuss@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: IETF Tools Discussion <tools-discuss.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/tools-discuss>, <mailto:tools-discuss-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/tools-discuss/>
List-Post: <mailto:tools-discuss@ietf.org>
List-Help: <mailto:tools-discuss-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/tools-discuss>, <mailto:tools-discuss-request@ietf.org?subject=subscribe>
X-List-Received-Date: Wed, 21 Jul 2021 21:21:32 -0000

It appears that \'Toerless Eckert\' <tte@cs.fau.de> said:
>> I don't think this is a problem that can be solve by IETF.
>
>Let me disagree!
>
>It is of course very frustrating to see such bugs in deployments
>for a spec from 1982 (RFC821/RFC5321). But if the problem does happen in
>a large enterprise as ATT, it likely happens elsewhere too,
>and after 43 years its clear it will not go away by itself:
>
>I suspect that after 43 years this is not even bad old code, but
>badly written "recent" SMTP code. SMTP sending looks from the outset so
>simple, many attempt to just re-implement it as few lines of
>code in their app and of course miss out on details. I know
>i did (statue of limitations for me ;-).

An interesting guess, but clearly wrong, since it's still a well known bug
in Microsoft Exchange.

How about if you pop up to Redmond, explain to Microsoft what they're doing
wrong, and let us know what they say?

R's,
John