This section provides additional information which supplements that found in the section "Sending mail with VMS MAIL" in the first chapter of the PMDF User's Guide.

In VMS MAIL, whenever a message is sent with the IN% protocol prefix in its address, VMS MAIL activates PMDF's MAIL-11 foreign protocol interface to hand over the message to PMDF. PMDF receives the message and places the message in the proper PMDF channel queue for disposition.