https://bz.apache.org/SpamAssassin/show_bug.cgi?id=7827
Bug ID: 7827
Summary: SpamAssassin reports DKIM invalid when email contains
attachment
Product: Spamassassin
Version: 3.4.2
Hardware: PC
OS: Windows NT
Status: NEW
Severity: normal
Priority: P2
Component: Plugins
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: Undefined
Hello,
I've been noticing that pretty much every email that contains an attachment,
even if coming from @outlook.com or @gmail.com, for example, is marked with
DKIM invalid.
The emails are 100% legit, because I reply to them and receive a reply. And,
the emails without attachment are marked as DKIM valid.
I use the Mail::SpamAssassin::Plugin::DKIM extension of SpamAssassin, which
adds DKIM_INVALID & DKIM_SIGNED to the X-Spam-Status header.
header __DKIM_EXISTS exists:DKIM-Signature
meta DKIM_INVALID !__DKIM_EXISTS || !DKIM_VALID
describe DKIM_INVALID DKIM-Signature header does not exist or is not valid
score DKIM_INVALID 5.0
And the emails do have DKIM header, but SpamAssassin sees them as invalid:
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=outlook.com;
s=selector1;
h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck;
...
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
d=gmail.com; s=20161025;
h=mime-version:references:in-reply-to:from:date:message-id:subject:to;
...
Thanks!
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