DNS Replication problems

I am trying to do an SBS migration, using SBS swing migration, to move our SBS network to a new physical server. I’ve added the tempDC to the network, but I cannot get the dns to replicate. Every support tools is saying that the RPC server is unavailable. I’m not sure where to start troubleshooting. On the tempDC, I am able to ping the sbs server by name and ipaddress. From the sbs server, I am unable to ping the tempDC. Also, when I ping just the domain name, ex. ping domain.local, the ipaddress that it shows is to the tempDC, and is also unreachable.

Any help? Where do I start looking to fix.