msgid

msgid=

---

The Message-ID: header identifier

syslog equate

RFC2822 requires that each email message have a unique worldwide identifier associated with it. That identifier is listed with the Message-ID : header (Message-ID:) and often looks something like this:

 Message-Id: <[e-mail]> 

The information inside, and including, the angle brackets is the message identifier. That identifier is what is listed with the msgid= syslog equate:

 msgid=<[e-mail]> 

If a mail message arrives without a Message-ID : header, and if your configuration file correctly includes a definition for that header, a new identifier will be created and listed with msgid= . If a Message-ID : header is absent, and if your configuration file incorrectly excludes a definition for that header, the msgid= syslog equate will be excluded from the syslog report.

The msgid= syslog equate is shown only for sender records.