I have a customer that is havign some wierd issues on his Exchange server running on a SBS 2008 Server
1. He has a one user that cannot send mail to certan email address, they bounce back. but she can send to other email address just fine, and other users on the same Exchagne Server can send to the ones she can't send to.
mx01.perfora.net #550 <xxxxxxx>: invalid address ##
2. Also, some people can't seem to email them, they get a boucen back saying simply
This is an automatically generated Delivery Status Notification.
Delivery to the following recipients failed.
How can I setup logging on this servder to see if those messages even get to the server, and what do I do about this one users issues?