Undeliverable: How to display the Original Message and .dat file
 

I got an undeliverable notification on my outlook client but there is no
original message & dat file attached. How can I configure Outlook so that the
undeliverable notification displays the original message and .dat file?

I am assuming that they are just hidden since I can see the original message
and dat file when I forward the notification as an attachment to a
non-exchange user and open it from Outlook Express.