Cannot access externally hosted company website from internal network
Hi,
A customer recently moved their website from one hosting company to another.
They now cannot access their website from their internal network. Obviously this is a DNS problem as it works from everywhere else and worked fine before it was moved.
Their domain is now being hosted by one company and the websever on which their site resides by their web developer/designer.
For arguments sake their domain name is abc.co.uk. When I try a tracert abc.co.uk from their SBS 2003 it returns "unable resolve target system name". Their is a forward lookup zone for abc.co.uk in DNS on the server. I have tried adding a www A record to this zone and pointing it to the external IP address of the new webserver but this doesn't work. I have also tried removing the abc.co.uk forward lookup zone without success. There was no entries in the abc.co.uk forward lookup zone other than the 2 default entries created when the zone is created before it was deleted and the website moved.
One thing that is odd about their new site is that the "http://www." is removed from the address when you arrive at their website.
Your help is gratefully appreciated.
A customer recently moved their website from one hosting company to another.
They now cannot access their website from their internal network. Obviously this is a DNS problem as it works from everywhere else and worked fine before it was moved.
Their domain is now being hosted by one company and the websever on which their site resides by their web developer/designer.
For arguments sake their domain name is abc.co.uk. When I try a tracert abc.co.uk from their SBS 2003 it returns "unable resolve target system name". Their is a forward lookup zone for abc.co.uk in DNS on the server. I have tried adding a www A record to this zone and pointing it to the external IP address of the new webserver but this doesn't work. I have also tried removing the abc.co.uk forward lookup zone without success. There was no entries in the abc.co.uk forward lookup zone other than the 2 default entries created when the zone is created before it was deleted and the website moved.
One thing that is odd about their new site is that the "http://www." is removed from the address when you arrive at their website.
Your help is gratefully appreciated.
When you run nslookup, and lookup the IP of the website's domain name, do you get the expected IP address?
When you perform a whois lookup on the domain, who is the authoritative name server?
You need to get www.abc.co.uk and abc.co.uk records added to those name servers.
You need to get www.abc.co.uk and abc.co.uk records added to those name servers.
The fact that it works externally, I'm assuming with the www. appended then it is most likely only your Internal DNS that is failing.
If there is no reason for you to have the DNS zone created internally then remove it.
Your DNS forwarders should be configured to point to the external DNS servers and this will resolve your lookups directly.
Also have a look at the hosts. (C:\WINDOWS\SYSTEM32\DRIVE
If there is no reason for you to have the DNS zone created internally then remove it.
Your DNS forwarders should be configured to point to the external DNS servers and this will resolve your lookups directly.
Also have a look at the hosts. (C:\WINDOWS\SYSTEM32\DRIVE
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Hi Guys.
Thanks for all your comments!
I had neglected to flush the DNS on the SBS after deleting the forward lookup zone originally... DOH!!!
Even with the forward abc.co.uk zone still there it works.
The AD zone is abc.local.
Thanks again for your help.
Thanks for all your comments!
I had neglected to flush the DNS on the SBS after deleting the forward lookup zone originally... DOH!!!
Even with the forward abc.co.uk zone still there it works.
The AD zone is abc.local.
Thanks again for your help.