Topic: DKIM issue, verification of message body fails
==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version (check /etc/iredmail-release): 0.9.9 PGSQL edition
- Deployed with iRedMail Easy or the downloadable installer? N
- Linux/BSD distribution name and version: OpenBSD 6.4
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): PGSQL
- Web server (Apache or Nginx): N
- Manage mail accounts with iRedAdmin-Pro? N
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
====
Problem: Doing a header check on mxtoolbox I see Signature Did Not Verify or Body Hash Did Not Verify in regards to DKIM. When I email gmail or other providers such as Protonmail email goes through to the inbox fine, but for Microsoft based email this is enough of a problem that it gets junked.
I have tested the following:
- Emailing from the Android mail app and Thunderbird, as well as doing a header check from an alert email from PfSense and FreeNAS, all have the same issue.
- Using http://dkimvalidator.com or https://www.port25.com/authentication-checker/ I get a DKIM pass without an issue strangely.
- Adjustments in amavis conf as you will see
Notes:
- clamav is turned off and also disabled in amavisd.conf
- I am not running out of system memory
- In the attached files privatedomain.com represents my domain and likewise with the IP 11.11.11.11
Example header:
Received: from YTXPR0101MB1950.CANPRD01.PROD.OUTLOOK.COM
(2603:10b6:b00:15::39) by YQXPR0101MB1943.CANPRD01.PROD.OUTLOOK.COM with
HTTPS via YTOPR0101CA0026.CANPRD01.PROD.OUTLOOK.COM; Mon, 21 Jan 2019
02:47:27 +0000
Received: from YTXPR01CA0055.CANPRD01.PROD.OUTLOOK.COM
(2a01:111:e400:7a0f::23) by YTXPR0101MB1950.CANPRD01.PROD.OUTLOOK.COM
(2603:10b6:b00:e::33) with Microsoft SMTP Server (version=TLS1_2,
cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1537.26; Mon, 21 Jan
2019 02:47:26 +0000
Received: from TO1CAN01FT004.eop-CAN01.prod.protection.outlook.com
(2a01:111:f400:7e5d::200) by YTXPR01CA0055.outlook.office365.com
(2a01:111:e400:7a0f::23) with Microsoft SMTP Server (version=TLS1_2,
cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1537.25 via Frontend
Transport; Mon, 21 Jan 2019 02:47:26 +0000
Authentication-Results: spf=pass (sender IP is 11.11.11.11)
smtp.mailfrom=privatedomain.com; senttodomain.com; dkim=pass (signature was verified)
header.d=privatedomain.com;senttodomain.com; dmarc=pass action=none
header.from=privatedomain.com;compauth=pass reason=100
Received-SPF: Pass (protection.outlook.com: domain of privatedomain.com designates
11.11.11.11 as permitted sender) receiver=protection.outlook.com;
client-ip=45.63.15.84; helo=mx.privatedomain.com;
Received: from mx.privatedomain.com (11.11.11.11) by
TO1CAN01FT004.mail.protection.outlook.com (10.152.122.115) with Microsoft
SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id
15.20.1558.11 via Frontend Transport; Mon, 21 Jan 2019 02:47:26 +0000
Received: from mx.privatedomain.com (mx.tetmail.ca [127.0.0.1])
by mx.privatedomain.com (Postfix) with ESMTP id 43jbYp1xgLz1Lxk
for <senttouser@senttodomain.com>; Mon, 21 Jan 2019 02:47:26 +0000 (UTC)
Authentication-Results-Original: mx.privatedomain.com (amavisd-new); dkim=pass
(1024-bit key) reason="pass (just generated, assumed good)"
header.d=privatedomain.com
DKIM-Signature: v=1; a=rsa-sha256; d=tetmail.ca; h=
content-transfer-encoding:content-language:content-type
:mime-version:user-agent:date:message-id:subject:from:to; s=
dkim; t=1548038845; x=1550630846; bh=SYWW2Nrmp2FwAMLob8nsbS33r4G
tO2KkG5GNKC0esWU=; b=UQNSCIQJrvePtK04yfEdnLHsUdvuAU3mr2OrqGMkD6g
FOrByweHfuIpNWioX8MUYLbdZL7pD3TZ6HyfGjme7zn+MbBvK3iwBm5y1Of/mLql
Yfd4Dt2giaZGOXhcotttsUxSFtgaYLBbbcQokgbJBwHWW2jFr7ND3aLx/ZqxUC1s
=
Received: from mx.privatedomain.com ([127.0.0.1])
by mx.privatedomain.com (mx.privatedomain.com [127.0.0.1]) (amavisd-new, port 10026)
with ESMTP id KcSVZMahjQlf for <senttouser@senttodomain.com>;
Mon, 21 Jan 2019 02:47:25 +0000 (UTC)
Received: from mycomputername.domainname.com (S54623456g568.wp.shawcable.net [24.78.149.195])
by mx.privatedomain.com (Postfix) with ESMTPSA id 43jbYn4F8dz1Lxh
for <senttouser@senttodomain.com>; Mon, 21 Jan 2019 02:47:25 +0000 (UTC)
To: senttouser@senttodomain.com
From: Daulton <daulton@privatedomain.com>
Subject: Test #7
Message-ID: <7404a62e-70a3-dd6d-5e85-ca565a91e5c5@privatedomain.com>
Date: Sun, 20 Jan 2019 20:47:23 -0600
User-Agent: Mozilla/5.0 (X11; OpenBSD amd64; rv:60.0) Gecko/20100101
Thunderbird/60.2.1
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Language: en-GB
Content-Transfer-Encoding: 7bit
Return-Path: daulton@privatedomain.com
X-MS-Exchange-Organization-ExpirationStartTime: 21 Jan 2019 02:47:26.7426
(UTC)
X-MS-Exchange-Organization-ExpirationStartTimeReason: OriginalSubmit
X-MS-Exchange-Organization-ExpirationInterval: 2:00:00:00.0000000
X-MS-Exchange-Organization-ExpirationIntervalReason: OriginalSubmit
X-MS-Exchange-Organization-Network-Message-Id:
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X-EOPAttributedMessage: 0
X-EOPTenantAttributedMessage: 2db8f5b4-c71d-41e3-b426-1ba68e9185f3:0
X-MS-Exchange-Organization-MessageDirectionality: Incoming
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CIP:45.63.15.84;IPV:NLI;CTRY:;EFV:NLI;SFV:SPM;SFS:(189003)(199004)(956004)(126002)(2616005)(476003)(555874004)(486006)(2160300002)(426003)(106002)(65956001)(2361001)(36906005)(356004)(65806001)(2351001)(620700002)(6916009)(106466001)(558084003)(34756004)(7116003)(58126008)(47776003)(65826007)(305945005)(7596002)(36756003)(7636002)(230700001)(246002)(53416004)(52146003)(74482002)(34003)(86362001)(67846002)(1096003)(31696002)(6266002)(8676002)(64126003)(50466002)(336012)(23676004)(31686004)(2486003)(26005)(44180200009);DIR:INB;SFP:;SCL:5;SRVR:YTXPR0101MB1950;H:mx.tetmail.ca;FPR:;SPF:Pass;LANG:en;PTR:mx.tetmail.ca;MX:1;A:1;CAT:SPM;
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SpamDiagnosticOutput: 1:22
SpamDiagnosticMetadata: Default
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 21 Jan 2019 02:47:26.5082
(UTC)
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Mxtoolbox header check on this header yields 'Body Hash Did Not Verify' with the given configs.
Any advice would be helpful.
Thanks
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