We have multiple DNS servers in a 2003 AD level domain that we use for Windows 7 clients. If we do a NSLookup from a client to the third DNS server in the list we are getting "unknown Non-existant domain". This is a new error and is creating issues routing mail between a couple of domains that we have shared contacts with.
Here is some for info:
DNS Servers . . . . . . . . . . . : 10.22.1.30
*** UnKnown can't find 192.168.0.20: Non-existent domain
DNS gives me headaches just thinking about it. Any ideas on where to start? Thanks.