We have a two way trust connecting two different domains. When using the ABC domain it gives us an error message about the RPC not able to contact the one domain controller on the other domain. When using the 123 domain it says it is working.
I can ping the host name and IP Address. I also used dcdiag on both domain servers and tested dns.
I did not test dcdiag on the domain controller that is not working, because it is not acting as a DNS server.
We have also restarted all servers involved.