I have found that the M drive is a good place to do a global search of users mailboxes (e.g. Items over 10 mb in size). Then I could see who was hoarding large emails, usually in Deleted Items or mutliple copies in Sent Items. This normally works fine. I do the file management/deletion within Outlook itself, not from Windows Explorer.
I have found a few situations where the files found on the M drive do not exist in the users folders. e.g. One user shows they have a dozen emails of 10 – 20 mb each in their deleted and sent items folders, but when I go to their mailbox, those folders are empty (and no view filter exists).
A) Why do they show differently?
B) Is it OK to delete these orphans using Windows Explorer on the M drive?