SCO (HDB) UUCP <---> MSDOS UUPC Question/Problem

[REIDMP at MAINE.BITNET]

I have been setting up UUCP on 386 Xenix 2.3.2 and sending mail files
to and from my PC by modem, using UUPC 1.09c.  Everything seems to work
fine, except for two things:
 
   1. The SCO mailer only seems to know bang-path format mail addresses,
      so instead of mailing  jsmith at foo.UUCP i must mail foo!jsmith.
      What am I missing?
 
   2. When I receive mail on my PC, the sender is "Unknown".  This doesn't
      happen if I send mail to myself from the PC to the PC, or if I send
      mail from the PC to the SCO system.  It always happens when I send
      mail from the SCO to the PC.  Ack!
 
Any help would be greatly appreciated.  If there is sufficient interest,
I will summarize to comp.unix.questions.  Please send mail direct to
me at reidmp at maine.maine.edu or reidmp at maine.bitnet
 
thanks in advance
     Reid M. Pinchback