Appendix A. Example Failure Report
The complete example failure report is preserved below.
Appendix A. Example Failure Report
This is the full content of a sample failure message, including the
message header.
Received: from gen.example (gen.example [192.0.2.1])
(TLS: TLS1.3,256bits,ECDHE_RSA_AES_256_GCM_SHA384)
by mail.consumer.example with ESMTPS
id 00000000005DC0DD.0000442E; Tue, 19 Jul 2022 07:57:50 +0200
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple;
d=gen.example; s=mail; t=1658210268;
bh=rCrh1aFDE8d/Fltt8wbcu48bLOu4OM23QXqphUZPAIM=;
h=From:To:Date:Subject:From;
b=IND9JkuwF9/5841kzxMbPeej0VYimVzNKozR2R89M8eYO2zOlCBblx507Gz0YK7mE
/h6pslWm0ODBVFzLlwY9CXv4Vu62QsN0RBIXHPjEXOkoM2VCD5zCd+5i5dtCFX7Mxh
LThb2ZJ3efklbSB9RQRwxcmRvCPV7z6lt/Ds9sucVE1RDODYHjx+iWnAUQrlos6ZQb
u/YOUGjf60LPpyljfPu3EpFwo80mSHyQlP/4S5KEykgPQMgCqLPPKvJwu1aAIDj+jG
q2ylO3fmc/ERDeDWACtR67YNabEKBWtjqCRLNxKttazViJTZ5drcLfpX0853KoougX
Rltp7zdoLdy4A==
From: DMARC Filter <DMARC@gen.example>;
To: dmarcfail@consumer.example
Date: Tue, 19 Jul 2022 00:57:48 -0500 (CDT)
Subject: FW: This is the original subject
Mime-Version: 1.0
Content-Type: multipart/report; report-type=feedback-report;
boundary="=_mime_boundary_"
Message-Id: <20220719055748.4AE9D403CC@gen.example>;
This is a MIME-formatted message. If you see this text it means that
your E-mail software does not support MIME-formatted messages.
--=_mime_boundary_
Content-Type: text/plain; charset=utf-8
Content-Disposition: inline
Content-Transfer-Encoding: 7bit
This is an authentication failure report for an email message
received from IP 192.0.2.2 on Tue, 19 Jul 2022 00:57:48 -0500.
--=_mime_boundary_
Content-Type: message/feedback-report
Content-Transfer-Encoding: 7bit
Feedback-Type: auth-failure
Version: 1
User-Agent: DMARC-Filter/1.2.3
Auth-Failure: dmarc
Authentication-Results: gen.example;
dmarc=fail header.from=consumer.example
Identity-Alignment: dkim
DKIM-Domain: consumer.example
DKIM-Identity: @consumer.example
DKIM-Selector: epsilon
Original-Envelope-Id: 65E1A3F0A0
Original-Mail-From: author=gen.example@forwarder.example
Source-IP: 192.0.2.2
Source-Port: 12345
Reported-Domain: consumer.example
--=_mime_boundary_
Content-Type: message/rfc822; charset=utf-8
Content-Transfer-Encoding: 7bit
Authentication-Results: gen.example;
dkim=permerror header.d=forwarder.example header.b="EjCbN/c3";
dkim=temperror header.d=forwarder.example header.b="mQ8GEWPc";
dkim=permerror header.d=consumer.example header.b="hETrymCb";
dkim=neutral header.d=consumer.example header.b="C2nsAp3A";
Received: from mail.forwarder.example
(mail.forwarder.example [IPv6:2001:db8::23ac])
by mail.gen.example (Postfix) with ESMTP id 5E8B0C159826
for <x@gen.example>; Sun, 14 Aug 2022 07:58:29 -0700 (PDT)
Received: from mail.forwarder.example (localhost [127.0.0.1])
by mail.forwarder.example (Postfix) with ESMTP id 4Ln7Qw4fnvz6Bq
for <x@gen.example>; Tue, 19 Jul 2022 07:57:44 +0200
DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed;
d=forwarder.example; s=ed25519-59hs; t=1658210264;
x=1663210264; bh=KYH/g7ForvDbnyyDLYSjauMYMW6sEIqu75/9w3OIONg=;
h=Message-ID:Date:List-Id:List-Archive:List-Post:List-Help:
List-Subscribe:List-Unsubscribe:List-Owner:MIME-Version:Subject:
To:References:From:In-Reply-To:Content-Type:
Content-Transfer-Encoding:autocrypt:cc:content-transfer-encoding:
content-type:date:from:in-reply-to:message-id:mime-version:
openpgp:references:subject:to;
b=EjCbN/c3bTU4QkZH/zwTbYxBDp0k8kpmWSXh5h1M7T8J4vtRo+hvafJazT3ZRgq+7
+4dzEQwUhl+NOJYXXNUAA==
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
d=forwarder.example; s=rsa-wgJg; t=1658210264; x=1663210264;
bh=KYH/g7ForvDbnyyDLYSjauMYMW6sEIqu75/9w3OIONg=;
h=Message-ID:Date:List-Id:List-Archive:List-Post:List-Help:
List-Subscribe:List-Unsubscribe:List-Owner:MIME-Version:Subject:
To:References:From:In-Reply-To:Content-Type:
Content-Transfer-Encoding:autocrypt:cc:content-transfer-encoding:
content-type:date:from:in-reply-to:message-id:mime-version:
openpgp:references:subject:to;
b=mQ8GEWPcVpBpeqQ88pcbXpGHBT0J/Rwi8Zd2WZTXWWneQGRCOJLRcbBJpjqnrwtqd
76IqawH86tihz4Z/12J1GBCdNx1gfazsoI3yaqfooRDYg0mSyZHrYhQBmodnPcqZj4
/25L5278sc/UNrYO9az2n7R/skbVZ0bvSo2eEiGU8fcpO8+a5SKNYskhaviAI4eGIB
iRMdEP7gP8dESdnZguNbY5HI32UMDpPPNqajzd/BgcqbveYpRrWCDOhcY47POV7GHM
i/KLHiZXtJsL3/Pr/4TL+HTjdX8EDSsy1K5/JCvJCFsJHnSvkEaJQGLn/2m03eW9r8
9w1bQ90aY+VCQ==
X-Original-To: users@forwarder.example
Received: from mail.consumer.example
(mail.consumer.example [192.0.2.4])
(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)
key-exchange ECDHE (P-256) server-signature ECDSA (P-384)
server-digest SHA384)
(Client did not present a certificate)
by mail.forwarder.example (Postfix) with ESMTPS id 4Ln7Qs55xmz4nP
for <users@forwarder.example>;
Tue, 19 Jul 2022 07:57:41 +0200 (CEST)
Authentication-Results: mail.forwarder.example;
arc=none smtp.remote-ip=192.0.2.4
Authentication-Results: mail.forwarder.example;
dkim=pass (512-bit key; secure) header.d=consumer.example
header.i=@consumer.example header.a=ed25519-sha256
header.s=epsilon header.b=hETrymCb;
dkim=pass (1152-bit key; secure) header.d=consumer.example
header.i=@consumer.example header.a=rsa-sha256
header.s=delta header.b=C2nsAp3A
DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed;
d=consumer.example; s=epsilon; t=1658210255;
bh=KYH/g7ForvDbnyyDLYSjauMYMW6sEIqu75/9w3OIONg=;
h=Date:Subject:To:References:From:In-Reply-To;
b=hETrymCbz6T1Dyo5dCG9dk8rPykKLdhJCPFeJ9TiiP/kaoN2afpUYtj+SrI+I83lp
p1F/FfYSGy7zz3Q3OdxBA==
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
d=consumer.example; s=delta; t=1658210255;
bh=KYH/g7ForvDbnyyDLYSjauMYMW6sEIqu75/9w3OIONg=;
h=Date:To:References:From:In-Reply-To;
b=C2nsAp3AMNX33Nq7nN/StPo921xE3XGF8Ju3iAKdYB3EKhsril0N5IjWGlglJECst
jLNKSo7KWZZ2lkH/dVZ9Rs1GHT2uaKy1sc/xmNIC5rHdhrxammiwpTSo4PsT8disfc
3DVF6Q62n0EsdLFqcw1KY8A9inFqYKY2tqoo+y4zMtItqCYx3xjsj3I0IFLuX
Author: Message Author <author@consumer.example>
Received: from [192.0.2.8] (host-8-2-0-192.isp.example [192.0.2.8])
(AUTH: CRAM-MD5 uXDGrn@SYT0/k, TLS: TLS1.3,128bits,
ECDHE_RSA_AES_128_GCM_SHA256)
by mail.consumer.example with ESMTPSA
id 00000000005DC076.00004417; Tue, 19 Jul 2022 07:57:35 +0200
Message-ID: <2431dc66-b010-c9cc-4f2b-a1f889f8bdb4@consumer.example>
Date: Tue, 19 Jul 2022 07:57:33 +0200
List-Id: <users.forwarder.example>
List-Post: <mailto:users@forwarder.example>
List-Help: <mailto:users+help@forwarder.example>
List-Subscribe: <mailto:users+subscribe@forwarder.example>
List-Unsubscribe: <mailto:users+unsubscribe@forwarder.example>
List-Owner: <mailto:users+owner@forwarder.example>
Precedence: list
MIME-Version: 1.0
Subject: This is the original subject
Content-Language: en-US
To: users@forwarder.example
Authentication-Results: consumer.example; auth=pass (details omitted)
From: Message Author <author@consumer.example>
In-Reply-To: <20220718102753.0f6d9dde.cel@example.com>
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 8bit
[ Message body was here ]
--=_mime_boundary_--
The Source-Port field definition is given by [RFC6692].
In the final MIME entity, the local-parts of To and From addresses
are reported unredacted. Since we know that the local parts are PII,
we can reduce the privacy risk by redacting them. In the example,
the report generator could have replaced "users" with "lRLxexey" and
"author" with "RT47aVey" throughout the entity.
If the body of the message is not included, the last MIME entity
would have "Content-Type: text/rfc822-headers" instead of "message/
rfc822".