MASTGATE can now be used as alternative transport method for Mercury.
(Yes, that means Mercury over UUCP).

What you need to do is:

1) Set up SMPT gateway with PCONFIG to use spool directory method.

2) Add

   MERCURY = YES

   to [WAFFLE.IMPORT] and [WAFFLE.EXPORT] sections and remove the
   LOG entry from both sections (because Mercury does it's own logging).

3) Change FILEMASK in [WAFFLE.EXPORT] and [SLEEPER] sections to *.110

4) Point MAILDIR in [WAFFLE.IMPORT] and INPUT in [WAFFLE.EXPORT] to
   your Mercury spool directory (or directories if you have different
   ones for incoming and outgoing mail).

After these changes EXPORT will look for *.110 files in Mercury spool
directory and process them. Note that you should not run GLUE.EXE over these
messages, because they already have slightly different headers created by
Mercury.

IMPORT will have all it's message routing and notification disabled and
will just deliver all messages into Mercury spool directory with the
extension 101. Mercury will pick them up and deliver from there.