Website won’t resolve for internal LAN clients

December 12, 2008 · Filed Under Troubleshooting · Comment 

I have seen this pop-up on a couple different forums and even though it is not IIS specific, it always seems that IIS catches the blame for it. The issue is that external clients have no problem connecting to a website that is hosted on an internal server, but clients on the internal LAN cannot connect. After troubleshooting through this on the Technet forums with a poster it comes to find out that the issue is the internal LAN clients are resolving the website name to the external IP. For some reason the router is not allowing these internal clients to connect back internally correctly.
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