Hello, How can we supress NDR 5.2.2 message in MS Excahge 2003 enterprise verion. NDR 5.2.2 is an erro displyed back to the sender if recepients mail box is full The following recipient(s) could not be reached: <username > on 5/10/2008 8:36 PM The message could not be delivered because the recipient's mailbox is full. -- Maqsood Ali Khan makhan_oib@hotmail.com