Hi,
My MX records are pointing to my Barracuda 1 and Barracuda 2
and
Barracuda 1 points to EDGE 1
Barracuda 2 points to EDGE 2
I am using Hardware Load Balancer for Exchange 2013 CAS Servers and there is Virtual IP where all other traffic will be routed. In cut Over exchange 2010 to Exchange 2013, I am planning not to use EDGE servers anymore, So Both Barracuda will be pointed to that Virtual IP of LB on port 2.
Regards
Usman
Usman Ghani - MCITP Exchange 2010