Tied together branch office with main office over two Cisco ASAs. The (internal) networks on either side can communicate with the other. I can ping, use the DC's DNS service and even join a domain on a new client. I can't however logon, I get the "domain controller is not available" error message on client. I find nothing peculiar in DC's event logs.
Sicne it's site-to-site (with ping), it's always up so it should work. No firewall rules (except allow any any) between the two networks (of either side).
Main site internal net: 10.10.10.0/24
Branch office net: 10.180.3.0/24
Am I overlooking something here? Where should I start investigating this?d