I am the manager of an Exchange 2003 server with 30 accounts. I am not an expert though.
For security reasons I need that all emails that are sent from any of those Outlook account cannot be deleted by the user.
User can delete any of their Outlook email and folder, except the Sent folder and the emails within that folder.
Please bid for creating a tutorial on how to do this.
I need this so if someone sends important company information to an email outside the company, the email is kept and cannot be deleted by that person (so we can investigate what is sent from each account).