I have an exchange 2003 server with some mailboxes and am adding a 2007 CAS, Hub and Mailbox server.
We have TMG on the outside and when I tried to add the listener for the new Exchange box it says I cannot have two listeners with overlapping IP addresses and or ports.
Since both have their own SSL certificates and were pointing to different servers I didn't think it would matter.
But I guess I cannot have people resolve through 443 to two different boxes?
Any advice would be helpful.