SpamAssassin Rule: MSGID_FROM_MTA_HEADER
Standard description: Message-Id was added by a relay
Explanation
The Message-Id header appears above at least one Received header in the message. This is a good indication that the Message-Id was generated by a relay, rather than by the user agent. This may be an indication of poorly behaved mailing software.
Further Info
The default scores for this rule can be found ![[WWW]](/wiki/modern/img/moin-www.png){kind=small}
in the online list of tests.
Message-Id is defined as an optional field that should be present ( RFC 2822 sec 3.6.4).