Originally Posted by penguin3107
Call your wireless carrier and make sure that you have the correct BLACKBERRY DATA PLAN provisioned on your account. Also, verify that the BLACKBERRY DATA PLAN you have supports BES. There's often a "personal" Blackberry Data Plan (BIS) and an "enterprise" Blackberry Data Plan (BES).
You need a BES capable Blackberry Data Plan.
Specific to Cingular, I'll agree.
Also check to see if you've been moved during that timeline to another exchange server. BES Admin can check to reload your listing on the BES. Not sure what else could be the problem. OH is there a previous user that owned this particular Pearl unit? If so then its something the BES Admin should be able to look into.