LAN computers can’t access company website with the internal DNS – Resolution with screenshots

16 Sep

LAN computers can’t access company website with the internal DNS – Resolution with screenshots

Situation: Our client is running Windows 2008 R2 as DC/DNS. Every thing works except they can’t access their website located in a
hosting company. They get “The webpage cannot be found”. However, if they replace the internal DNS (192.168.1.3 that is also DC/DNS IP address) with
their ISP DNS, they can access the website. All inside computers with the internal DNS have this problem. They don’t have the problem to access other
websites.

Troubleshooting:.

1. nslookup can resolve the website.

2. No proxy, firewall and content filter to block the website.

3. We found the client created an DNS for the external domain as shown below. The fix is deleting the external domain. We do believe adding www.domain.org in the external DNS will fix the problem too.

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