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Re: [OT] Regular DKIM issues on this ML (was: Re: why !oh why Debian and application list)



Hi,

12 juin 2020 à 22:53 de recoverym4n@enotuniq.net:

> Yes, but I just cannot find that particular e-mail of yours with
> Message-Id: <> [🔎] M9Er2Er--3-2@tuta.io> >.
>
I didn't understand where you got the ID then? ^^

> And the search via Web interface finds nothing.
>
https://lists.debian.org/debian-user/2020/06/msg00215.html

12 juin 2020 à 23:16 de mstone@debian.org:

> On Fri, Jun 12, 2020 at 11:53:40PM +0300, Reco wrote:
>
>> No, the body is not interesting at all here.
>> What I'm interested in is the result of DKIM check, and that's might be
>> written in e-mail headers. Or not.
>>
> dkim=fail (2048-bit key) reason="fail (body has been altered)"                                                                                                               header.d=tuta.io
>
Thanks Michael. The "reason" is stated a little bit differently from my side but it boils down to the same thing. Here are the full headers as requested by Reco:

Authentication-Results: w3.tutanota.de (dis=spam; info=dmarc domain policy);	dmarc=fail (dis=spam p=quarantine; aspf=r; adkim=s; pSrc=dns) header.from=tuta.io;	dkim=fail reason="body hash does not match" header.d=tuta.io header.s=s1 header.b=FCKFHXRgReceived: from w4.tutanota.de ([192.168.1.165])        by w3.tutanota.de        with SMTP (SubEthaSMTP 3.1.7) id KB5CNTA9        for l0f4r0@tuta.io;        Sun, 07 Jun 2020 19:38:11 +0200 (CEST)Received-SPF: None (mailfrom) identity=mailfrom; client-ip=82.195.75.100; helo=bendel.debian.org; envelope-from=bounce-debian-user=l0f4r0=tuta.io@lists.debian.org; receiver=<UNKNOWN> Received: from bendel.debian.org (bendel.debian.org [82.195.75.100])	by w4.tutanota.de (Postfix) with ESMTPS id E710910602CF	for <l0f4r0@tuta.io>; Sun,  7 Jun 2020 17:38:11 +0000 (UTC)Received: from localhost (localhost [127.0.0.1])	by bendel.debian.org (Postfix) with QMQP	id 645DA20490; Sun,  7 Jun 2020 17:38:07 +0000 (UTC)X-Mailbox-Line: From debian-user-request@lists.debian.org Sun Jun  7 17:38:07 2020Old-Return-Path: <l0f4r0@tuta.io>X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on bendel.debian.orgX-Spam-Level: X-Spam-Status: No, score=-9.9 required=4.0 tests=DIGITS_LETTERS,DKIM_INVALID,	DKIM_SIGNED,LDOSUBSCRIBER,LDO_WHITELIST,RCVD_IN_DNSWL_NONE,	RCVD_IN_MSPIKE_H2 autolearn=unavailable autolearn_force=no	version=3.4.2X-Original-To: lists-debian-user@bendel.debian.org Delivered-To: lists-debian-user@bendel.debian.org Received: from localhost (localhost [127.0.0.1])	by bendel.debian.org (Postfix) with ESMTP id 28D0220487	for <lists-debian-user@bendel.debian.org>; Sun,  7 Jun 2020 17:38:00 +0000 (UTC)X-Virus-Scanned: at lists.debian.org with policy bank en-htX-Amavis-Spam-Status: No, score=-6.201 tagged_above=-10000 required=5.3	tests=[BAYES_00=-2, DIGITS_LETTERS=1, DKIM_SIGNED=0.1,	DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1,	LDO_WHITELIST=-5, RCVD_IN_DNSWL_NONE=-0.0001,	RCVD_IN_MSPIKE_H2=-0.001] autolearn=ham autolearn_force=noReceived: from bendel.debian.org ([127.0.0.1])	by localhost (lists.debian.org [127.0.0.1]) (amavisd-new, port 2525)	with ESMTP id E4EkTvek1ETa for <lists-debian-user@bendel.debian.org>;	Sun,  7 Jun 2020 17:37:55 +0000 (UTC)X-policyd-weight: using cached result; rate: -4.6Received: from w4.tutanota.de (w4.tutanota.de [81.3.6.165])	(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	 client-signature RSA-PSS (2048 bits) client-digest SHA256)	(Client CN "tutanota.com", Issuer "Sectigo RSA Domain Validation Secure Server CA" (not verified))	by bendel.debian.org (Postfix) with ESMTPS id AE09620485	for <debian-user@lists.debian.org>; Sun,  7 Jun 2020 17:37:55 +0000 (UTC)Received: from w3.tutanota.de (unknown [192.168.1.164])	by w4.tutanota.de (Postfix) with ESMTP id E763E1060254	for <debian-user@lists.debian.org>; Sun,  7 Jun 2020 17:37:52 +0000 (UTC)DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1591551472;	s=s1; d=tuta.io;	h=From:From:To:To:Subject:Subject:Content-Description:Content-ID:Content-Type:Content-Type:Content-Transfer-Encoding:Content-Transfer-Encoding:Cc:Date:Date:In-Reply-To:In-Reply-To:MIME-Version:MIME-Version:Message-ID:Message-ID:Reply-To:References:References:Sender;	bh=s0Y3rXEVXjnN/M6XYAtvSYoqbqPfl8XS3uJxBmHyC0Q=;	b=FCKFHXRgAWn5LR7h0/3d6Xxik44GKm3SLLgp0YhDEVrIFOC6xrJZYVh7ccv1UQGf	6QtvLewAWCYnk1VUntaSnEXprLS2Eh9uQnCN7XVbiMA5oguf6QQ4lohnRviwtTt3x3K	NFThvwzmLuHereSCAeBoWoaNLqqZltQsUdg6tS5ubUphw0jvwHywxQT6X2floh9rFko	kBqkQZD1nFfAgLtVuwIYm+PSv6+2FA51nufGuk5LOm3RAYUzk5J2S6mqKm0z2Dulc5i	XAvanOIePofjpXG/ARkuqgbd306GVKL6chiqfbVl/5ZMIS5PDEshxufAxi9/MLIwoxp	cNeZzZT14A==Date: Sun, 7 Jun 2020 19:37:52 +0200 (CEST)From: l0f4r0@tuta.io To: Debian User <debian-user@lists.debian.org>Message-ID: <[🔎] M9Er2Er--3-2@tuta.io>In-Reply-To: <[🔎] dfce1b61-8439-4c29-4d8b-1dec467fe7a2@gmx.de>References: <[🔎] dfce1b61-8439-4c29-4d8b-1dec467fe7a2@gmx.de>Subject: Re: why !oh why Debian and application listMIME-Version: 1.0Content-Type: text/plain; charset=UTF-8Content-Transfer-Encoding: quoted-printableX-Rc-Virus: 2007-09-13_01X-Rc-Spam: 2008-11-04_01Resent-Message-ID: <hKLHkctiec.A.Ma._XS3eB@bendel>Resent-From: debian-user@lists.debian.org X-Mailing-List: <debian-user@lists.debian.org> archive/latest/763444X-Loop: debian-user@lists.debian.org List-Id: <debian-user.lists.debian.org>List-URL: <https://lists.debian.org/debian-user/>List-Post: <mailto:debian-user@lists.debian.org>List-Help: <mailto:debian-user-request@lists.debian.org?subject=help>List-Subscribe: <mailto:debian-user-request@lists.debian.org?subject=subscribe>List-Unsubscribe: <mailto:debian-user-request@lists.debian.org?subject=unsubscribe>Precedence: listResent-Sender: debian-user-request@lists.debian.org List-Archive: [🔎] M9Er2Er--3-2@tuta.io">https://lists.debian.org/msgid-search/[🔎] M9Er2Er--3-2@tuta.io Resent-Date: Sun,  7 Jun 2020 17:38:07 +0000 (UTC)

13 juin 2020 à 09:52 de andy@strugglers.net:

> Looking at the email concerned, it had a line starting with "From"
> quoted with a ">".
>
Indeed! I hope it's not a mistake of mine (usually I proofread my emails before sending them but who knows...).

> Mailing lists often do things like that, breaking DKIM.
>
Why would they do that? ">" is rather usually indicated to insert quotations isn't it?

13 juin 2020 à 09:56 de andy@strugglers.net:

> I will add that I recall that Debian postmasters have been asked
> before about making changes to accommodate receiving sites that are
> strict about DKIM, and they explicitly declined to do so. I think
> that was more in the context of rewriting the mail's From header
> though (not preventing body changes as is the case here).
>
Thanks for the feedback.
If it's Debian ML responsibility, better to know it because my email provider won't be able to do anything about fixing the issue.

l0f4r0


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