[cisco-voip] Unified messaging and Exchange 2003

[Netfortius]

Could someone point me to some detailed architectural documents regarding 
specific integration between unity and exchange 2003, best practices, etc. 
One of the challenges I am faced with, right now, for example, is figuring 
out where I could do the limitation on voice mailbox size - e.g.  once the 
voicemail makes it into the Exchange inbox, there is no easy way to prevent 
the users from moving those sound files around folders, thus taking them out 
of the normal/scriptable areas where the Exchange admins could do 
cleanups ... etc.

I have come across:

http://www.cisco.com/en/US/products/sw/voicesw/ps2237/products_installation_guide_book09186a008041fc62.html

but that is far too simplified for all the details I am interested in.

TIA,
Stefan