Check the FAQ's on this site...
Link is here...
Check out your cmine service books if your not on BES, and you will need to adjust these..
Check the site "Search" feature to shed more light on this message. The message is sent automatically to your BB and is normally seen. That message comes from the RIM-Server that tries to connect a BIS-Unit to BES. Happens when you're on BIS and try to activate the Enterprise Setup. After a few days the RIM-Server will stop the messages automatically as the message server will send the message and it will enter the inbox and then be removed once the server sees the message in your inbox... If not on BES, re-install Desktop Manager for BIS only and then set up your account on the BIS site.
H.