I use Exchange 2003 and Outlook 2007. I have a user, who is a special case and difficult at best, with a 17GB mailbox and a 9GB archive file. I am seeking some advice on how to handle this users mailbox. The user is extremely unreasonable and refuses to delete old mail. I cant go in and delete mail myself and neither can anyone else. I do try to delete some when I can, but its never enough. I am switching to exchange 2010 by years end, will this allow me to better handle the users mailbox and what measures can I take now to handle the mailbox that will also allow me to easily migrate this user to Exchange 2010?