If the message is intact in your sent items folder then it was fine when submitted to the Exchange server. So the issue is not with the BB or BES. It would have to be modified by the BB or BES before hitting the Exchange server. I've seen issues like that before and it is not your BlackBerry or BES. If you study message flow for BES you will see that any message sent from a BlackBerry hits the Exchange server last before being sent to the internet and the recipient. It should be blank for everyone if the BES is stripping the body because it would be submitted to the Exchange server in that format. I do know that some WAN Accelerators do strip the bodies of emails when sent from a BB. You could check into that as well.