VPN Network DNS Lookups Do Not Work

J

Joe Hinkle

I have an issue where my Dial-In VPN clients on network 10.73.255.0 cannot lookup DNS names against my $domain.local network on a 10.73.0.0 network. The VPN clients can ping the DNS server, and I can do a lookup on forward zones that we manually configured for our .com websites. I cannot do a lookup against my .local addresses. For example if I ping the IP of my exchange server it works fine, but if I do a nslookup the DNS server returns error:

*** Unknown can't find exchange.$mydomain.local: Non-existent Domain.

I don't see anything security related in the DNS settings that would block this. The logs for DNS Server in event viewer don't show anything related to my failed lookup. The only item that looks out of place to me is that I'm using the Barracuda VPN client and apparently I can't add a DNS Suffix to my connection. Even so I would think that using the full DNS name of server.domain.local would still get a response from the server.

Does anyone have any ideas of what I can troubleshoot to find why the 10.73.255.0 network can't get a response from the DNS server?

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