[Exim] Compare and Delete Mailboxes

Hi,

I need a quick script that will check /var/mail/abc.com against
/usr/local/etc/exim/virtual/abc.com/users

where users = updated file of all existing "Virtual Domain Exim Users"

If the user's mailbox is not in the "users" file, it should be deleted.

There is just too many users, to do it manually.

Thank you so much.

Regards
Schalk Erasmus
Incredible Networks