We have one user who suddenly has her new mail going to a folder "Deleted Items -> Unwanted". She claims she has not changed anything, the other Exchange administrator says he has not changed anything. I checked the rules in OWA and in Outlook on her computer. I have run out of places to look. I also don't know what other information might be relevant.
Server is Exchange
2007 2013 (we upgraded in the last few weeks), Client is Outlook 2013 on Windows 7 Pro.
Update: The user's description of the issue was "all new mail", but I noticed that it is actually only mail from mailing lists and Gmail accounts that is being moved. Mail from internal addresses and non-Gmail accounts is staying in the inbox.
I also noticed that most of the mail actually appears in the inbox for a few seconds before it gets moved . This leads me to believe that a mobile device might be involved.