I am having an error with DKIM signing on my Virtualmin installation. I fail with a bad signature error on appmaildev.com with the following message:
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x-sender: test567921@techandtiny.com
x-receiver: test-0d0022e9@appmaildev.com
Received: from techandtiny.com ([207.180.244.68]) by appmaildev.com with Microsoft SMTPSVC(8.5.9600.16384);
Wed, 5 Dec 2018 02:59:16 +0000
Received: from mail.techandtiny.com (localhost [IPv6:::1])
by techandtiny.com (Postfix) with ESMTPA id 690EAA00F4D
for test-0d0022e9@appmaildev.com; Wed, 5 Dec 2018 03:59:15 +0100 (CET)
DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=techandtiny.com;
s=2018; t=1543978755;
bh=IdDISA7hpxF8t8MBe3wgJ4GYMOP36VNdVJelEmHXsz8=;
h=Date:From:To:Subject:From;
b=MPDAtv54xFBJU6sDUXAQuWeTQBKfzhAt+CbVyBDIFvhfUXHcM/g5DsLgbA4mxd3Mp
KqYCDKmH8ssEZa0NWw55rGohhQAAHl58uY3OJMOcJvDT15UfzQCB9hFydK15deCKUR
x2xYPErKPbhFfS+19h+mvbX89wNjBWPBaSzYjKi03ejO8wyZUztnNLkVWzVEUuT9wd
ZZci67aCQj2l8Oy82rIz+Jqq9YsZbk2zPCBSjTIy5gHNhVTBv+fWys+QfozX0/DaxJ
KBOmpq2eokxXQIdGAKK+1F8IGwAOqdeVKh8bXSvymsvYB7lGfCr4A7HJh0KewSEUR8
ainTgpi9gNNxQ==
MIME-Version: 1.0
Content-Type: multipart/alternative;
boundary="=_a714f72bffa8f8fcb351fcabf96ced70"
Date: Tue, 04 Dec 2018 21:59:15 -0500
From: “test567921-techandtiny.com” test567921@techandtiny.com
To: test-0d0022e9@appmaildev.com
Subject: Test
Message-ID: 718618548fdcab6942ba45200928050a@techandtiny.com
X-Sender: test567921@techandtiny.com
User-Agent: Roundcube Webmail/1.3.8
Return-Path: test567921@techandtiny.com
X-OriginalArrivalTime: 05 Dec 2018 02:59:16.0951 (UTC) FILETIME=[82BB7670:01D48C46]
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Here is the log:
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DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=techandtiny.com;
s=2018; t=1543978755;
bh=IdDISA7hpxF8t8MBe3wgJ4GYMOP36VNdVJelEmHXsz8=;
h=Date:From:To:Subject:From;
b=MPDAtv54xFBJU6sDUXAQuWeTQBKfzhAt+CbVyBDIFvhfUXHcM/g5DsLgbA4mxd3Mp
KqYCDKmH8ssEZa0NWw55rGohhQAAHl58uY3OJMOcJvDT15UfzQCB9hFydK15deCKUR
x2xYPErKPbhFfS+19h+mvbX89wNjBWPBaSzYjKi03ejO8wyZUztnNLkVWzVEUuT9wd
ZZci67aCQj2l8Oy82rIz+Jqq9YsZbk2zPCBSjTIy5gHNhVTBv+fWys+QfozX0/DaxJ
KBOmpq2eokxXQIdGAKK+1F8IGwAOqdeVKh8bXSvymsvYB7lGfCr4A7HJh0KewSEUR8
ainTgpi9gNNxQ==
Signed-by: test567921@techandtiny.com
Expected-Body-Hash: IdDISA7hpxF8t8MBe3wgJ4GYMOP36VNdVJelEmHXsz8=
Public-Key: v=DKIM1; k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA3YpIRYMYlH+x1crhTbS5z2AjcTVUxzr9+vG4+p/fpwm4jv5Gt9cGpmztl8BxWgSa81EXnv6Bz2mt+PxCNNTCHiVBfWYoD/9bdDlf+w7IzT//qLpKcw+31GupZQJln5N5IKDw46V/APgTU7PrsL5hRoNek4TFDsSfwM9JvR4wabSdRpL337K9+W20jWx+iF2e+MuiiJ9qiphNgt/RK7Z8UqWW7TvveYunwBp7m+gPXdEhExs69PoWmqfj09JWFjJDQBQk/QLTq3ABPDbrGRVKq9FYg55wecS56d8y78+7L5jvlJ25L5Bm2ERnNNdIfAJZD4uLobYBqTFFB6bIBOKs2wIDAQAB;
DKIM-Result: fail (bad signature)
DMARC: none
DomainKey: none
PTR: ExistsRecord
RBL: NotListed
Download Report
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Test results:
http://www.appmaildev.com/site/download/0d0022e9
I created this temporary test email for amelioration purposes so please feel free to message me there as well if you have a solution.