I am having this issue and can do reverse lookups from both my VC's in different sites to their IP address's and host names using nslookup.
I have also checked that my DNS has an A record and that each VC is pointing to their respective DNS servers and those servers have both the forward and reverse lookups.
Besides rebuilding a new server (As mine is a physical box in our DR) has anyone found any work arounds for this?
I know I can obviously build up a new VC and point it to my primary SSO but that kind of defeats the point of what I'm trying to do which is having two sites that aren't completely reliant on each other.
Please provide anything you think may be worth trying