Re: [ietf-smtp] EHLO domain validation requirement in RFC 5321

John Levine <johnl@taugh.com> Mon, 28 September 2020 00:26 UTC

Return-Path: <johnl@iecc.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 937CA3A091A for <ietf-smtp@ietfa.amsl.com>; Sun, 27 Sep 2020 17:26:49 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.851
X-Spam-Level:
X-Spam-Status: No, score=-1.851 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=0.249, 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=qOfadiqO; dkim=pass (2048-bit key) header.d=taugh.com header.b=SKk4A1FX
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 oR2Frq16rqcx for <ietf-smtp@ietfa.amsl.com>; Sun, 27 Sep 2020 17:26:48 -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 214F63A0907 for <ietf-smtp@ietf.org>; Sun, 27 Sep 2020 17:26:47 -0700 (PDT)
Received: (qmail 82833 invoked from network); 28 Sep 2020 00:26:45 -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; s=1438f.5f712dc5.k2009; bh=7chcOLKvh+TICH0jI+dwMTC7+ERgzULcyxgly6Tnbow=; b=qOfadiqOE2QtcY5tOSMDe/XGF6A4bCFaV5bjdDheU7BUJtudhFdtYQKvth4Jt4xiOdFK5k2NwQdlnNpjcGARRcvwaYTSHwI8R1Rgc7OkuojmxZZBawXjj2eSoo/sJj1IJWwEZ6s2g4uS+3OA70585SlAeOEHI/+Me1HEcJPsFHbxJoGdhpG53PkvJi2Ppc1Dbi2Y9DaUk+r6rGAmxFVp5ulRIIouQYynbKGoeAOANUuI+lAaK3xyVFl7vSk3+Y5Scy2xlvhPQUKgwzY/Fgr8smOacIbAoHTQf3zyCQDgB8mWWlccZq0QwqXqrD+zUrWTRFOz8sw64r6zoW7edI+4zA==
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; s=1438f.5f712dc5.k2009; bh=7chcOLKvh+TICH0jI+dwMTC7+ERgzULcyxgly6Tnbow=; b=SKk4A1FXycoJcA1KgoDUsCCfNEkbVCS5KXjSj/a9ScfcwT/chYXdk0IrFdhvWmBy/whcn75pKz3Dmw2GgcFJy0mrdxvdRGIBfDqpUHLfDkeL5G2SwK8A/jTVspyqDNKX9KRSpRtuFYSR62WDbFV+Ylj5qw6VxqkGSyFp/L7+80SFj3ajowmItEuGuMBp1BIeSxAswnXaxcoiCiX/FdDACKaay4i6T3oBIPX1tFo6yKWJ1XHqsUpVDv/2vQzGW9hzksgv3TGMhtTmtLZq6D1OJxfYwaRwfRNau8me8Yc0JEd1rpOV7U1ob6jgo4HiKCyIeWodaQXbrYk0AAaoYouxDA==
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; 28 Sep 2020 00:26:44 -0000
Received: by ary.qy (Postfix, from userid 501) id 0F214229A921; Sun, 27 Sep 2020 20:26:43 -0400 (EDT)
Date: 27 Sep 2020 20:26:43 -0400
Message-Id: <20200928002644.0F214229A921@ary.qy>
From: "John Levine" <johnl@taugh.com>
To: ietf-smtp@ietf.org
Cc: mrsam@courier-mta.com
In-Reply-To: <cone.1601252021.530626.35945.1004@monster.email-scan.com>
Organization: Taughannock Networks
X-Headerized: yes
Mime-Version: 1.0
Content-type: text/plain; charset=utf-8
Content-transfer-encoding: 8bit
Archived-At: <https://mailarchive.ietf.org/arch/msg/ietf-smtp/vtMekM9i2do_3TXfEh8yM8WehLo>
Subject: Re: [ietf-smtp] EHLO domain validation requirement in RFC 5321
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: Mon, 28 Sep 2020 00:26:50 -0000

In article <cone.1601252021.530626.35945.1004@monster.email-scan.com> you write:
>Anyone around here been on Usenet in the late 1990s, and remember this on- 
>going flamewar, how spam filtering is detrimental, how everyone has an  
>entitled right to have their email delivered, yadda yadda yadda?

I'm definitely getting a 1990s vibe here.

R's,
John