I'm trying to set up a number of private networks across the UK, all connected to each other by VPN. The current number of networks would be 6, and I would like to have 6 Exim servers. I'm aiming to have a single email address for all networks - such as one user on Network 1 would have joedoe@??? and one user on Network 3 would be janesmith@??? - so the Exim server on Network 1 would have joedoe's mailbox and user info, and the Exim server on Network 3 would have janesmith's mailbox and user info. Is this setup at all possible? or will I be required to seperate the email addresses such as joedoe@??? and janesmith@???? I suspect I can only set up one MX record on the DNS server and email for all networks would go through one exim server which isn't optimial (as bandwidth isn't that large)?
