Listing Mailboxes
 

I'm running exim mail server and setting up a seperate server as a mx gateway. However, to help protect against dictionary attacks, I would like to get a list of all available mailboxes and aliases from the exim mail servers. I COULD go through and make a script that scans the mail directories and alias files but I have not had great luck with that. It always seems to miss a mailbox here and there especially if the user has messed up their alias file. I was wondering if there is some exim script or command anyone knows that will spit out a list of all available email addresses that it will accept for.