SpamAssassin Rule: <INVALID MSGID>
Standard description: Message-Id is not valid, according to RFC 2822
Explanation
Matches Message-ID headers that exist but do not meet a lenient definition of valid syntax. Exempts cases of embedded comments in Message ID's
Further Info
The default scores for this rule CANNOT be found in the online list of tests.
/var/lib/spamassassin/3.001003/updates_spamassassin_org/50_scores.cf:score INVALID_MSGID 1.705 1.710 2.054 2.185