I realize that the FQDN of my CAS array is host.abc.com. My NLB is also host.abc.com and both are resolvable internal and external. The url for all of my Exchange services is also host.abc.com.
I read that the fqdn for the CAS array should only be resolvable internally only. My question is, can I simply change the CAS array FQDN to casname.abc.com and create the DNS record internally so only internal clients can resolve?
If it's possible, what, if any, issues should I expect to see after I change the fqdn?