The non-VM  versions do not currently  have interfaces for MSP.  That is,
while  the  necessary infrastructure  is  in  place,  one would  need  to
implement the equivalent  of the 'SMSG MSGD' and IUCV  *MSG interfaces. I
strongly  suspect that  every  MSGD implementation  would  need its  own,
private interface :-( Since there is  virtually no demand for MSGD, we've
never really looked into it.
 
  Eric