One of my clients is having this problem. He tries to add a sender to his junk list and he gets this error. "Unable to add to the server Junk E-mail List, you are over the size allowed on the server." Ive read things saying that the list that you make in Office itself is useless and to put a mail filter before the exchange server, and ive also read that you can change the registry key to make the list larger. I want ot put a filter in but i would like to edit the registry for a temporary solution until i get the mail filter working, could someone tell me how to edit the registry key for this? Ive attached a Screen shot of the error incase anyone was wondering.