[dmarc-ietf] Re: dmarc pct=, t= (and other) adoption statistics

Alessandro Vesely <vesely@tana.it> Mon, 29 June 2026 17:22 UTC

Return-Path: <vesely@tana.it>
X-Original-To: dmarc@mail2.ietf.org
Delivered-To: dmarc@mail2.ietf.org
Received: from localhost (localhost [127.0.0.1]) by mail2.ietf.org (Postfix) with ESMTP id 78EF610A06B34 for <dmarc@mail2.ietf.org>; Mon, 29 Jun 2026 10:22:45 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ietf.org; s=ietf1; t=1782753765; bh=BXyRWoannpFTh75vKJKSWKT0jagjYwgVyPJFSAR+R28=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=tMMcrYpNBsi/HeNtnqV1y5XgwKBZcjMfVIw0BY6HxZPqWvSVRMclp4KAcg6ECBUVB bIxVCxd5BfIgGO2OIypRXinI2TEbyzhhRJT9mSt/Gz/puhbxdCKjeNNL4ZTrSC1DIq KHjVJs0jEv99Y7POVeruId3Hhc4vQQ7jZs/7EU7Q=
X-Virus-Scanned: amavisd-new at ietf.org
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, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no
Authentication-Results: mail2.ietf.org (amavisd-new); dkim=pass (1152-bit key) header.d=tana.it
Received: from mail2.ietf.org ([166.84.6.31]) by localhost (mail2.ietf.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id JBthOJ_R8aw2 for <dmarc@mail2.ietf.org>; Mon, 29 Jun 2026 10:22:43 -0700 (PDT)
Received: from wmail.tana.it (wmail.tana.it [94.198.96.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature ECDSA (P-256) server-digest SHA256) (No client certificate requested) by mail2.ietf.org (Postfix) with ESMTPS id 9159410A06A0B for <dmarc@ietf.org>; Mon, 29 Jun 2026 10:22:11 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=tana.it; s=delta; t=1782753729; bh=rPDK57fbGFn4i/LTzXMRO5c35PS3Y7u+VKyEUs7x/UE=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=CheSI9EpJAS3jj79gs5qJVBUYqgQ/TmmV40/HF9k+idincODN6c7cBvc6dLAs+/Gk IOiTTZKRdmTNbe+/DSTAHqaAgxIIBJNI2ZngGkN7F29qx+qBdgHkjkRi7vChH8Vtmd E1GZedm393XJW+H1/VqIBtDPwoJOIH6H+xSboNjGRb1vIWFXhblylaHZZ8CRQ
Original-Subject: Re: [dmarc-ietf] Re: dmarc pct=, t= (and other) adoption statistics
Author: Alessandro Vesely <vesely@tana.it>
Received: from [192.168.1.176] (host-95-250-148-83.retail.telecomitalia.it [::ffff:95.250.148.83]) (AUTH: CRAM-MD5 uXDGrn@SYT0/k, TLS: TLS1.3,128bits,ECDHE_RSA_AES_128_GCM_SHA256) by wmail.tana.it with ESMTPSA id 00000000005DC07B.000000006A42A9C1.0000575F; Mon, 29 Jun 2026 19:22:09 +0200
Message-ID: <2a525068-7d86-4f04-9a0f-966405eb0123@tana.it>
Date: Mon, 29 Jun 2026 19:22:09 +0200
MIME-Version: 1.0
User-Agent: Mozilla Thunderbird
To: John R Levine <johnl@ietf.email>, Dan Mahoney <danm@prime.gushi.org>
References: <4936934E-024D-4365-A297-3BB6AD41FAD3@prime.gushi.org> <20260627181156.BAF9811241678@ary.qy> <7d946d7f-1230-48ed-af75-beb54c81cf43@tana.it> <7E2F37DC-2522-4ED1-8E52-4AC6012D8E0E@prime.gushi.org> <f484e98d-6361-bbe5-2fe2-a644022a4604@ietf.email> <0fa0bc2c-e680-4c3f-b39b-ca717dfe5d00@tana.it> <99d4a8cd-2e22-2271-dd6e-359f008a6574@ietf.email>
Content-Language: en-US, it
Authentication-Results: tana.it; auth=pass (details omitted)
From: Alessandro Vesely <vesely@tana.it>
In-Reply-To: <99d4a8cd-2e22-2271-dd6e-359f008a6574@ietf.email>
Content-Type: text/plain; charset="UTF-8"; format="flowed"
Content-Transfer-Encoding: 8bit
Message-ID-Hash: 7GMGUJL4JSMGAXGHQDUFG24GB5VKMJ5U
X-Message-ID-Hash: 7GMGUJL4JSMGAXGHQDUFG24GB5VKMJ5U
X-MailFrom: vesely@tana.it
X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-dmarc.ietf.org-0; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header
CC: dmarc@ietf.org
X-Mailman-Version: 3.3.9rc6
Precedence: list
Subject: [dmarc-ietf] Re: dmarc pct=, t= (and other) adoption statistics
List-Id: "Domain-based Message Authentication, Reporting, and Compliance (DMARC)" <dmarc.ietf.org>
Archived-At: <https://mailarchive.ietf.org/arch/msg/dmarc/fDSkXVlLxS4eC7RvPMKrmdN2Jnc>
List-Archive: <https://mailarchive.ietf.org/arch/browse/dmarc>
List-Help: <mailto:dmarc-request@ietf.org?subject=help>
List-Owner: <mailto:dmarc-owner@ietf.org>
List-Post: <mailto:dmarc@ietf.org>
List-Subscribe: <mailto:dmarc-join@ietf.org>
List-Unsubscribe: <mailto:dmarc-leave@ietf.org>

On 29/06/2026 18:28, John R Levine wrote:
> On Mon, 29 Jun 2026, Alessandro Vesely wrote:
>
>> And this brings us nicely back to the main topic, since that 1% is 
>> precisely the traffic for which ARC was devised.  Is it bound to be 
>> rounded away or to be properly dealt with?
>
> I would prefer to stop beating this dead horse.  We all know where to 
> find the DKIM2 discussions in the DKIM WG.


I thought we are here to discuss why ARC failed to fix the mailing list 
problem.  Discussions in the DKIM WG don't seem to cover this point.


Best
Ale
--