ok, here goes.
Got one 2003 exchange server that handle SMTP domain X.com (not controlled by me)
Got one 2000 Exchange server that handle SMTP domain y.com.
User A got a SMTP adress: a@X.com that forward (E2003)) to a@Y.com.(E2000)
when someone try to mail a@X.com they will get an delivery notification failure:
Sent: den 14 mars 2006 13:59
Subject: Delivery Status Notification (Failure)
This is an automatically generated Delivery Status Notification.
Delivery to the following recipients failed.
Diagnostic-Code: smtp;554 5.6.1 Body type not supported by Remote Host
What to do ?