My company has a Microsoft Office 365 mail solution.
We all have personal mail account like JOE@COMPANY.DK.
All users are running Outlook 2013 / 2016.
We have an account called SALE@COMPANY.DK.
All users has configured SALE as a second Exchange account.
The problem is, that SOME of the users - not all, places SENT + DELETED mail items from SALE in their own, personal mail folders???