I am running Unity 4.0(5) with exchange 2k on box. In one of my classes of service, I have "Deleted Messages are copied to the deleted items folder"
We recently found that none of these deleted items are getting deleted even though our exchange message store deletion settings are set to keep deleted items for 0 days. AD settings for the user(s) are also set to use the message store settings.
I've since corrected the problem by adding a script in Unity tools, message store management and deleted items are now being removed.
What I don't understand is why does this script need to be run? What are the message store settings used for if they do not remove deleted messages? I also noticed that Exchange also has a mailbox manager that appears to do the same thing as the Unity script.