A very odd thing here - all my manager's internal e-mail is being put into a folder named "Junk" - Bear in mind there is the normal Outlook "Junk E-mail" folder which is unrelated to this issue. There are no rules set up that will do this, it is only affecting him and affects him in OWA as well as Outlook. I am not sure a) why they are being moved and b) where this folder came from but here is what I have tried -
1. Moved e-mail out of the folder into the inbox - result: they all go back in there
2. Deleted the folder - result: e-mail found their way back into the folder under the deleted items folder!
3. Changed various junk e-mail settings in Outlook like making the domain a safe sender (this should be enough on its own to stop the behaviour) - result: no change because this is not a Junk e-mail configuration issue.
What on earth is doing this?!