The white paper just needs to call this out - there should be no need to extend the schema again.
If you're attaching to an Exchange 5.5 server you don't even need to extend the schema at all - Unity only uses AD if you're attaching to an Exchange 2000 (if you're mixed 55/2K you need to attach Unity to a 2K server).
I'm not able to access my old voice mail messages all of a sudden. The recording says something like 'the message is currently not available'. This has never happened before in all the years I have been using this system. I have t...