I have a user that is experiencing a weird problem. Many emails from people (not all emails that come into the Inbox) are being automatically moved into the Deleted Items folder. This seems to go back for a few days. When the user tries to move the mail items from the Deleted Items folder back into the Inbox, they are once again automatically moved into the Deleted Items folder. However, if the messages are moved into a sub-folder on the Inbox the messages will stay in that sub-folder.
Our office uses an on-premises Exchange 2013 server. The user is using Outlook 2013 as the mail client. There are no rules being applied in Outlook. The conversations are not marked as "ignore."
This is the only user who has this problem. No other users are experiencing an issue like this. Does anyone know why this would be happening, or have some steps to take to find out what is happening?