https://bugs.exim.org/show_bug.cgi?id=2148
Bug ID: 2148
Summary: Nonsense i= parameter and the DKIM: log line
Product: Exim
Version: 4.89
Hardware: x86
OS: Linux
Status: NEW
Severity: bug
Priority: medium
Component: DKIM
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
I'm seeing log lines like this with the Debian build:
20170713-smtp25-mx0-mainlog:2017-07-13 08:05:19 1dVZ7f-0006EU-P1 DKIM:
d=canalrivertrust.org.uk s=mandrill c=relaxed/relaxed a=rsa-sha256 b=1024
i=ikipedia.org/wiki/.mu
20170712-smtp25-mx6-mainlog:2017-07-12 16:19:36 1dVKMR-0005cX-Ab DKIM:
d=info.petsathome.com s=petsathome c=relaxed/relaxed a=rsa-sha1 b=1024
i=ars.comâ
Sometimes [verification succeeded] appears at the end of the offending log
line, sometime it doesn't.
Other log lines from other DKIM signers look ok.
In the message body the i= parameter is sensible:
Received: from mail136-6.atl41.mandrillapp.com ([198.2.136.6])
by mx0.tvscience.co.uk with esmtps (TLS1.2:RSA_AES_256_GCM_SHA384:256)
(Exim 4.89)
(envelope-from
<bounce-md_10513099.596729ad.v1-355b6549e3dd422e8b4b35877a894...@mandrillapp.com>)
id 1dVZ7f-0006EU-P1
for [email protected]; Thu, 13 Jul 2017 08:05:19 +0000
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; s=mandrill;
d=canalrivertrust.org.uk;
h=From:Subject:Reply-To:To:Message-Id:Date:MIME-Version:Content-Type;
[email protected];
bh=3m2yK5xE2CuzE1v9+AulwlHPa/qZ+JOFsyQFkIdqHsI=;
b=pGtSDWjppFScQmpHCva9Z28zPrXHC0CmLfpWMFDebIFgAYDlacdo7IdUiOTSyu/48bWxSBF+ybi7
soCiAwFS3F8CJHfkcu/BqoP8JX1fG1tNBW9RfjbaPK6bJ2FJDm49B0p6D7/lFoJoihlZ36UNDXFJ
dS16Q1fQnqd006rfyMY=
Looks to me like something broke after the upgrade to Debian Stretch. Since
then all log entries for canalrivertrust.org.uk & info.petsathome.com have been
garbage. There are other offenders too, not all of which are Mailchimp clients.
I run exim4 using inetd (actually tcpsvd).
Can dig further if needed.
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