Q

Unable to view webpage inside LAN

I have a single domain Windows 2000 server and, since changing my Web hosting company and subsequently name servers, I am unable to view my webpage from inside the LAN. The domain and mail domain resolve fine from outside the company LAN. The server domain is the same name as my externally hosted domain name edlgroup.com. I know this is probably to do with forward and reverse lookups, but having spent a good few hours trying I am none the wiser. Can you help?

I have a single domain Windows 2000 server and, since changing my Web hosting company and subsequently name servers, I am unable to view my webpage from inside the LAN. The domain and mail domain resolve fine from outside the company LAN. The server domain is the same name as my externally hosted domain name edlgroup.com.

I know this is probably to do with forward and reverse lookups, but having spent a good few hours trying I am none the wiser. Can you help?

This is almost certainly a DNS issue – to confirm this, see if you can access your external website from an internal client by using its IP address, such as by browsing to http://10.0.0.1. If that is successful, confirm whether your internal DNS server contains an A record for the Web server and create one if it does not exist. Since your internal and external domain names match, your internal clients are likely querying your internal DNS server which is responding with "Yes, I am authoritative for the blah.com domain and I don't have a record for www.blah.com."
This was first published in December 2006

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