PMDF System Manager's Guide

The multigate keyword tells PMDF to route the message to the daemon mailbox specified by the daemon keyword (described in Section 2.3.4.81) on the system specified in the message's To: address. This differs from PMDF's behavior when the multigate keyword is not used, in which case PMDF routes the message to the official host associated with the channel, not the system specified in the message's To: address.

There are a variety of caveats associated with using the multigate keyword; some of its former uses are now obsolete. nomultigate is the default.