Mail server change utility
 

Currently if a user wants to change his mail server (for example, Sendmail into Exim), he needs to:
1. Back up his mail domains and mailboxes.
2. Delete all the mailboxes and domains.
3. Reinstall his mail server.
4. Restore the domains and mailboxes.
5. Restart anti-virus, anti-spam, Greylisting, etc.

Add a utility to automate this process.