Spiros,
 
As I  told you, you must  also change the entry  in the UGA list  to read
@PSUVM.PSU.EDU. You have  eliminated the problem between AU  and PSU, but
not between PSU and UGA. You don't  have the problem when you send to UGA
because PSU knows not  to send back to UGA. It is  UGA that cannot handle
the PSUVM.PSU.EDU origin.
 
  Eric