I am trying to remove a user's account from the active directory, but I want to save the user's exchange mailbox. To do so, I am going into the Server Management console, right clicking on the user, and clicking "remove user". However, when the next dialogue box comes up giving me the options of keeping or removing the user's home folder and mailbox, the checkbox to also remove the user's Exchange mailbox is automatically checked and it is grayed out so I cannot uncheck it. Why is this behavior happening and how can I change it? I need to have the ability to remove a user account without deleting their exchange mailbox.