I'm open to different methods, from scripting to open source software, but I need a list of all active directory users, and some settings about them, specifically, the Exchange Advanced tab's settings.
How can I do this?
Check out the Quest AD PowerShell addins. They are free and should be able to pull all that info.
I downloaded and used ADManager Plus to get the desired information. It had a report already made to find hidden mailboxes in exchange. The demo period is 30 days and then the product goes into limited mode, but worked like a charm today.