Exchange 2010 DAG DNS question
Posted on 2013-06-26
I have an Exchange 2010 DAG set-up with 1 server in our corporate office and 1 in a satellite office. We use Postini as a spam-filter and each Exchange server has all the requisite roles (CAS/Mailbox/Hub Transport) on it, and sits behind their respective site's firewall.
The only part of the DAG set-up I believe I need to work out is to provision for the external hostname that represents our mail (ex: mail.mydomain.com) to be able to fail over to the satellite office's IP for OWA/ActiveSync for transparent accessibility to web mail and connectivity to smartphones if something happens to the primary server and all services/mailboxes fail over to the satellite office. What do I need to do DNS-wise, to accomplish this?