We are running:
ZCS 5.0.16
BES Connector 5.0.18
Blackberry Manager

I have a strange problem with all my Blackberry users. We moved to a new server over the weekend. Now, all my BB users say they can only receive emails on their devices when they send one from the BB. For example, they can have many new messages in their inbox, but they will never show up on the BB until they actually send a message from the device. Then, all the messages will come through. So, they are having to send a message to themselves every time they want to retrieve new messages.

I am not sure what would cause this. Any ideas.