We are running Exchange 2007 SP1. Using the GUI, I can create a new Public Folder, and under limits I can set Prohibit Post to a certain size, say 5120 KB. My goal is to have this root folder, and all subfolders be restricted to stay under this amount, 5120 KB. However I find users in OUtlook can create a new subfolder under the root (which is okay), however everything they create inside of the subfolders dont increase the size of the root folder - it doesnt aggregate up apparently. Can I create and enforce root level folders with a maximum size of all items and subfolders within it?