The multithreaded TCP SMTP channel's SMTP server is designed to be
handled by the PMDF Service Dispatcher. The Service Dispatcher creates
and uses Worker Processes that handle the SMTP service; see
Chapter 11 for more details. In order to use the multithreaded TCP
SMTP channel, the Service Dispatcher must be configured to handle the
SMTP service, if it has not been so configured already. This
configuration may be achieved using the PMDF GUI configuration utility
as described in the appropriate edition of te PMDF Installation Guide , or by
using the command line utility PMDF CONFIGURE DISPATCHER (OpenVMS) or
pmdf configure dispatcher (UNIX); if you have not already
configured the PMDF Dispatcher you should do so at this time.