SCO mail questions

[James D. Levine]

Apparently part of my original posting got lost, so I'm reposting the whole
thing...

In the near future I will be needing to install two mail gateways on a 386 
machine running SCO System V (r3, I think).  One is X.400 using X.25, the
other X.400 using OSI (w/thick ethernet).


My questions:

Which mail programs support X.400?

What other software do I need?

Do I have to bind additional drivers to the kernel for X.25 and OSI support?  

Is any of the necessary software delivered as part of the basic SCO package?

Any help or hints are appreciated.  Replies by email are prefered.  Thanks in
advance.

jlevine.paloalto at xerox.com