I have one user, out of almost 500, who has connected his Android phone to Microsoft Exchange; I've ensured that this has been done correctly, but he, at one time, set up some inbox rules from the phone. After a few days all of his internal mail is being moved to a Junk folder after hitting the inbox. To clarify: it is not the junk folder, but a folder within the inbox that is labeled Junk.
Any thoughts or advice would be appreciated, thanks!