I plan to demote my old Exchange 2003 servers. One is a frontend server and the other is a backend server. Really the frontend server has all exchange 2003 roles. It's also using GFI mail essentials/security for filtering emails. I want to demote the backend server and then demote the frontend server.. Then make the frontend server simply an IIS SMTP server as a relay to filter emails via GFI Mail Essentials/Mail Security... Can someone send me links to doing this?