Re: [ietf-smtp] Reviving PRDR
Phil Pennock <ietf-smtp-phil@spodhuis.org> Sat, 30 March 2019 23:07 UTC
Return-Path: <ietf-smtp-phil@spodhuis.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 8EF101202D2 for <ietf-smtp@ietfa.amsl.com>; Sat, 30 Mar 2019 16:07:31 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2
X-Spam-Level:
X-Spam-Status: No, score=-2 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, SPF_PASS=-0.001, UNPARSEABLE_RELAY=0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=spodhuis.org header.b=oBdh+FBF; dkim=neutral reason="invalid (unsupported algorithm ed25519-sha256)" header.d=spodhuis.org header.b=hT8Hckc5
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 1SHt7G7-OMUp for <ietf-smtp@ietfa.amsl.com>; Sat, 30 Mar 2019 16:07:30 -0700 (PDT)
Received: from mx.spodhuis.org (smtp.spodhuis.org [IPv6:2a02:898:31:0:48:4558:736d:7470]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 1C97D1200A3 for <ietf-smtp@ietf.org>; Sat, 30 Mar 2019 16:07:30 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=spodhuis.org; s=d201902; h=Content-Transfer-Encoding:Content-Type: MIME-Version:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:In-Reply-To:References:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=82VS/7Kz+esVejK2aeGyr8WFPCIXw/akT0csTnP8LOY=; b=oBdh+FBFh1sN+U889xutcwEJpI 9/LzO0hx0Masn3i2lvvUxxNJ9MNipungIsaZ0CW5LP0muNSvExKZCMFCG1Y6XwzQOH9DHpTjCnxK/ 1plGQFthgE8SGQoYAi0qIMGesILzVCy5JJcVqUxnqlibx2BBIat9Ix/BilVKWwX3685ZozVLFV2bA E7ddyEluu2IfWbdjFz+2d9GmxSNHvvx8knxtad/ESdRLvbD4dJsBkGn0FaQHY3aXQYQblKKz9v95h w74Oyryfd0MMHY1DIAoGWSrvThdO5r14/CiWqxH0tVAV46aGXc3TO+J7L3nz7OwWNKXw6arnj7eTr PfizlslQ==;
DKIM-Signature: v=1; a=ed25519-sha256; q=dns/txt; c=relaxed/relaxed; d=spodhuis.org; s=d201902e2; h=Content-Transfer-Encoding:Content-Type: MIME-Version:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:In-Reply-To:References:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=82VS/7Kz+esVejK2aeGyr8WFPCIXw/akT0csTnP8LOY=; b=hT8Hckc5uHYVe8kIgsattG+81E f/dB95xbTBrWMcudg9S8l93cX2KS9UCeEo4G4mevyEzKhaVuYD9ilANBlJDw==;
Received: from authenticated user by smtp.spodhuis.org with esmtpsa (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) id 1hAN4Q-0001qL-5t; Sat, 30 Mar 2019 23:07:26 +0000
Date: Sat, 30 Mar 2019 19:07:22 -0400
From: Phil Pennock <ietf-smtp-phil@spodhuis.org>
To: Дилян Палаузов <dilyan.palauzov@aegee.org>
Cc: ietf-smtp@ietf.org
Message-ID: <20190330230722.GA89157@osmium.pennocktech.home.arpa>
Mail-Followup-To: Дилян Палаузов <dilyan.palauzov@aegee.org>, ietf-smtp@ietf.org
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Disposition: inline
Content-Transfer-Encoding: 8bit
OpenPGP: url=https://www.security.spodhuis.org/PGP/keys/0x4D1E900E14C1CC04.asc
Archived-At: <https://mailarchive.ietf.org/arch/msg/ietf-smtp/L9VNmerwED-VL053bqUcAcOvw8U>
Subject: Re: [ietf-smtp] Reviving PRDR
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: Sat, 30 Mar 2019 23:07:31 -0000
Deliberately breaking thread because distinct sub-topic, but what I'm saying is I think very relevant to IETF SMTP. On 2019-01-10 at 23:43 +0000, Дилян Палаузов wrote: > Last time PRDR was discussed here was 2014. Since 2013 it is integrated in Exim and back in March 2014 it was not > enabled by default. Today in Exim enable_prdr still defaults to False in the documentation, but the > src/configure.default sets it to true. > > Why isn’t enable_prdr in Exim enabled nowadays by default? Exim tends to be a little cautious in how new protocol features, especially not-standards-track protocol stuff, gets introduced. Local lookup sources? Throw them in easily, nobody else's business but the site operator. Protocol? We've never rushed there. PRDR has now moved to where support will be compiled in by default in the next release of Exim, and the builder has to choose to explicitly disable the feature. Actually advertising PRDR still needs to be explicitly turned on, but the default/example configure file will now do so. Jeremy Harris has done almost all of the hard work here but AFAIK all of the Exim maintainers are entirely on board with PRDR rolling out. I know I am. -Phil
- Re: [ietf-smtp] [Proposal] 250-MARKDOWN valdis.kletnieks
- [ietf-smtp] [Proposal] 250-MARKDOWN Viruthagiri Thirumavalavan
- Re: [ietf-smtp] [Proposal] 250-MARKDOWN Viruthagiri Thirumavalavan
- Re: [ietf-smtp] [Proposal] 250-MARKDOWN Viruthagiri Thirumavalavan
- Re: [ietf-smtp] [Proposal] 250-MARKDOWN Gilles Chehade
- Re: [ietf-smtp] [Proposal] 250-MARKDOWN Viruthagiri Thirumavalavan
- Re: [ietf-smtp] [Proposal] 250-MARKDOWN Gilles Chehade
- Re: [ietf-smtp] [Proposal] 250-MARKDOWN valdis.kletnieks
- Re: [ietf-smtp] [Proposal] 250-MARKDOWN Gilles Chehade
- Re: [ietf-smtp] [Proposal] 250-MARKDOWN Peter Bowyer
- Re: [ietf-smtp] [Proposal] 250-MARKDOWN Viruthagiri Thirumavalavan
- Re: [ietf-smtp] [Proposal] 250-MARKDOWN Viruthagiri Thirumavalavan
- Re: [ietf-smtp] [Proposal] 250-MARKDOWN Viruthagiri Thirumavalavan
- Re: [ietf-smtp] [Proposal] 250-MARKDOWN Viruthagiri Thirumavalavan
- Re: [ietf-smtp] [Proposal] 250-MARKDOWN Gilles Chehade
- Re: [ietf-smtp] [Proposal] 250-MARKDOWN Viruthagiri Thirumavalavan
- Re: [ietf-smtp] [Proposal] 250-MARKDOWN valdis.kletnieks
- Re: [ietf-smtp] [Proposal] confusing parts of the… John Levine
- Re: [ietf-smtp] [Proposal] confusing parts of the… Viruthagiri Thirumavalavan
- Re: [ietf-smtp] [Proposal] confusing parts of the… Brandon Long
- Re: [ietf-smtp] [Proposal] confusing parts of the… Gene Hightower
- Re: [ietf-smtp] [Proposal] confusing parts of the… John C Klensin
- Re: [ietf-smtp] [Proposal] confusing parts of the… Ned Freed
- Re: [ietf-smtp] [Proposal] confusing parts of the… Gene Hightower
- Re: [ietf-smtp] [Proposal] confusing parts of the… John Bucy
- Re: [ietf-smtp] [Proposal] confusing parts of the… John Levine
- Re: [ietf-smtp] [Proposal] confusing parts of the… John R Levine
- Re: [ietf-smtp] [Proposal] confusing parts of the… John Bucy
- Re: [ietf-smtp] [Proposal] confusing parts of the… valdis.kletnieks
- Re: [ietf-smtp] [Proposal] confusing parts of the… John R Levine
- Re: [ietf-smtp] [Proposal] confusing parts of the… John Levine
- Re: [ietf-smtp] [Proposal] confusing parts of the… valdis.kletnieks
- Re: [ietf-smtp] message/external-body John R Levine
- [ietf-smtp] Reviving PRDR Дилян Палаузов
- Re: [ietf-smtp] Reviving PRDR John Bucy
- Re: [ietf-smtp] [Proposal] confusing parts of the… John Bucy
- Re: [ietf-smtp] [Proposal] 250-MARKDOWN Keith Moore
- Re: [ietf-smtp] [Proposal] confusing parts of the… Gilles Chehade
- Re: [ietf-smtp] [Proposal] confusing parts of the… Gene Hightower
- Re: [ietf-smtp] [Proposal] confusing parts of the… Gene Hightower
- Re: [ietf-smtp] [Proposal] confusing parts of the… John R Levine
- Re: [ietf-smtp] [Proposal] confusing parts of the… Gene Hightower
- Re: [ietf-smtp] [Proposal] confusing parts of the… John R Levine
- Re: [ietf-smtp] [Proposal] confusing parts of the… Gene Hightower
- Re: [ietf-smtp] [Proposal] confusing parts of the… John R Levine
- Re: [ietf-smtp] [Proposal] confusing parts of the… valdis.kletnieks
- Re: [ietf-smtp] [Proposal] confusing parts of the… Gene Hightower
- Re: [ietf-smtp] [Proposal] confusing parts of the… Ned Freed
- Re: [ietf-smtp] [Proposal] confusing parts of the… John R Levine
- Re: [ietf-smtp] [Proposal] confusing parts of the… Ned Freed
- Re: [ietf-smtp] [Proposal] confusing parts of the… John Bucy
- Re: [ietf-smtp] [Proposal] confusing parts of the… John R Levine
- Re: [ietf-smtp] [Proposal] confusing parts of the… Jeremy Harris
- Re: [ietf-smtp] [Proposal] confusing parts of the… Gene Hightower
- Re: [ietf-smtp] chunking Claus Assmann
- Re: [ietf-smtp] chunking Jeremy Harris
- Re: [ietf-smtp] [Proposal] confusing parts of the… Gene Hightower
- Re: [ietf-smtp] [Proposal] confusing parts of the… Jeremy Harris
- Re: [ietf-smtp] [Proposal] confusing parts of the… John Levine
- Re: [ietf-smtp] [Proposal] confusing parts of the… John Levine
- Re: [ietf-smtp] [Proposal] confusing parts of the… Ned Freed
- Re: [ietf-smtp] [Proposal] confusing parts of the… Gene Hightower
- Re: [ietf-smtp] [Proposal] confusing parts of the… Paul Smith
- Re: [ietf-smtp] [Proposal] confusing parts of the… Steve Atkins
- Re: [ietf-smtp] [Proposal] confusing parts of the… Ned Freed
- Re: [ietf-smtp] [Proposal] confusing parts of the… Gene Hightower
- Re: [ietf-smtp] [Proposal] confusing parts of the… Arnt Gulbrandsen
- Re: [ietf-smtp] [Proposal] confusing parts of the… Ned Freed
- Re: [ietf-smtp] [Proposal] confusing parts of the… Ned Freed
- Re: [ietf-smtp] [Proposal] confusing parts of the… Gene Hightower
- Re: [ietf-smtp] [Proposal] confusing parts of the… Arnt Gulbrandsen
- Re: [ietf-smtp] [Proposal] confusing parts of the… Ned Freed
- Re: [ietf-smtp] [Proposal] confusing parts of the… Brandon Long
- Re: [ietf-smtp] [Proposal] confusing parts of the… Gene Hightower
- Re: [ietf-smtp] [Proposal] confusing parts of the… Brandon Long
- Re: [ietf-smtp] Reviving PRDR Phil Pennock
- Re: [ietf-smtp] Reviving PRDR Rolf E. Sonneveld