http://serverfault.com – We've had a hard disk failure, and have a backup of emails. The MTA on the server was Exim. We need to setup the mails on another server to give the admin access to these emails on desktop client such as Thunderbird or Outlook. As far as I know, there's no way to directly import Exim mail files into these clients. So I think we'll need to setup Exim on the new server as well. (HowTos)