Is the BB instant messaging monitored when the blackberry is activated with an enterprise server? This can be to other people using BB IM on the enterprise server and for those who use BB IM outside of the company.

Wirelessly posted (BlackBerry7100i/4.1.0 Profile/MIDP-2.0 Configuration/CLDC-1.1 VendorID/103)

Blackberry Messenger can be monitored with BES 4.0. With 4.1 all PIN messaging can be monitored.