I noticed that our Symantec Messaging Gateway (10.6.1-4) servers are inserting improperly formatted Received lines with the host name is missing:
Received: from XXX.Example.com (XXX.Example.com [10.18.61.81])
by (Symantec Mail Security) with SMTP id 11.1A.12345.1A2B3C4D; Fri, 26 Aug 2016 13:12:34 -0700 (PDT)
The host name is required after the "by" and before the parenthesized comment. I expect this is due to some mis-configuration on our part. I noticed that the configured host name on "Edit Host Configuration" was not a FQDN. I changed it to a FQDN, but the Received lines were still missing the host name.
Is anyone familiar with why this is happening, and what should be done to fix it?
Thanks....