Hello Paul,
 
Just to set the record straight, MCIGATEWAY.MCIMAIL.COM is in fact an attended
system, and all mail sent to this address will be processed.  Unfortunately,
addressing information is sometimes insufficient (or incorrect) making it
impossible to reply to.  The message in question "Fun and games with
MCIGATEWAY.MCIMAIL.COM" was processed and I do believe that Jim Jones recieved
a response.  Of course, the other 2 addresses that you list are fine to
use.
 
Paul D Gray
MCI Mail