lfd notifications: flagged as spam - missing and malformed headers

[larwilliams]

I recently began outgoing spam filtering on my server and with a score of 5. Lfd notifications are being picked up as spam because they are missing the date and message ID headers:

cached not
score=8.787
5 required
-1.00 ALL_TRUSTED
0.80 BAYES_50
1.08 FROM_IN_TO_AND_SUBJ
1.36 MISSING_DATE
1.60 MISSING_MID
0.10 TO_IN_SUBJ
2.10 TO_MALFORMED
0.00 TVD_SPACE_RATIO
2.75 TVD_SPACE_RATIO_MINFP

Here is the raw source of the notification that triggered the above. I've removed my server hostname, IP and internet connection hostname but it should still be understandable.

Received: from [127.0.0.1] (port=50999 helo=localhost.localdomain)
by host.server.com with esmtp (Exim 4.86)
(envelope-from <root@host.server.com>)
id 1ZwjIv-0014Lk-Vb
for root@host.server.com; Thu, 12 Nov 2015 00:46:10 -0330
From: root
To: root
Subject: lfd on host.server.com: WHM/cPanel root access alert from 1.1.1.1 (CA/Canada/<My internet connection naming>)

Time: Thu Nov 12 00:45:59 2015 -0330
IP: 1.1.1.1 (CA/Canada/<My internet connection naming>)
User: root

[ForumAdmin]

Your MTA (SMTP server) should be adding both fields if they are not present. We can look at adding an optional date field, but it is really up to the MTA to add the MESSAGE-ID field.

[larwilliams]

The MTA is a standard cPanel exim install with your MailScanner option, so it should be fine