MPScan - There is actually a thread here on BlackBerryforums.com about it.

http://www.blackberryforums.com/bes-...s-4-1-sp5.html

I am copying the first paragraph so it's easily readable to the viewers.

"Please note that this is an unsupported configuration by RIM. There are known issues and conditions that can potentially cause your messaging (Exchange) server to crash. This is not a recommended solution for large BlackBerry deployments. "