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I have setup two domains on a server local to my LAN.

The first one is registered with GoDaddy and resolves fine behind the router. The Second domain is using to handle the dns settings and isn't resolving behind the router locally. It is resolving outside of my lan though.

I can't figure out the issue... Any ideas?

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Are you using an internal DNS server, or directly querying your ISP's DNS from inside your LAN? Is the domain defined as a zone in your internal DNS? Can you post the output from your LAN for "dig +trace" for the domain that is failing? – Hyppy Mar 18 '11 at 12:03
I am querying against my ISP's DNS – Harry Mar 18 '11 at 12:09
I'm running windows on all of my machines - what is the equivalent command for dig? – Harry Mar 18 '11 at 12:10
nslookup is roughly similar. – Sven Mar 18 '11 at 12:14
dig is extremely helpful for DNS troubleshooting. There's a guide for grabbing it on Windows from the BIND for Windows archive here: – Hyppy Mar 18 '11 at 12:17

So, second domain is correctly solved outside of your network, that means your DNS cache should be cleaned:

ipconfig /flushdns

from command line, and try again.

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