Envelope-Journaled Messages
A message that envelope journaling processes consists of two parts: a journal report and the original message as an attachment. The journal report identifies the message originator and the message ID and contains the definitive list of the message's recipients, including all To and Cc recipients, recipients expanded from a DL, and any Bcc recipients. (It's worth pointing out that even hidden members of a DL are journaled.) The journal report contains both display-name properties for all addresses and actual SMTP addresses (as determined from the P1 headers). Note that the header on the journal message reflects that of the original message so that DLs appear intact and Bcc recipients aren't displayed. Figure 3 shows part of a journal message that clearly shows the journal report for a message sent to a DL (which contains only three members) and a Bcc recipient.
With an envelope-journaled message, the original message is retained as an attachment to the journal message. The journal message includes information about all message recipients, including mailboxes, public folder recipients, contacts, ad hoc recipients (i.e., SMTP addresses that don't exist in the Global Address List—GAL), alternate recipients, and members of DLs, including query-based DLs that have been expanded locally, which I discuss in a moment. . . .
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