Websites aren't working some of them on DNS Server 2003


I'm having some issues on my DNS server , we aren't able to access or some other websites, when i add ISP dns in their client computer it works but with our local DNS server IP address it doesnt work.

Looking at your earliest for your feedback.\


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Mohammed KhawajaConnect With a Mentor Manager - Infrastructure:  Information TechnologyCommented:
Few things to check:

1. On the firewall ensure port 53 (TCP and UDP) is allowed for the DNS server
2. On the DNS server, ensure to enable Root Hints
3. If you want to use your ISP's DNS then ensure to setup a forwarded to your ISP's DNS server
4. I am sure you are running DHPC, ensure DNS server is set to your DNS server IP address
moitzAuthor Commented:
its general thing which i already checked but still the same!!

it works with ISP DNS but doesnt work with our local dns although i already added in the forwarder address our dns but still the same.

Please advise
Cris HannaConnect With a Mentor Commented:
So you added dns forwarders?
did you restart the DNS services?
on the server and workstations open a command prompt and type IPCONFIG /FLUSHDNS
then try again
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Mohammed KhawajaConnect With a Mentor Manager - Infrastructure:  Information TechnologyCommented:
After starting DNS service, on the server, do the following:

1. On the client PC, open a command prompt after ensuring DNS server in IP configuration is set to your DC
2. Run nslookup

Check what it says for DNS server.  It should be either the name or the IP of your DC.  type in some names to see if it can resolve (i.e.,, etc.).

If it doesn't work then try the same on the DC.  Does the same thing work from the DC?
agree with @mnkhawaja

first step in DNS diagnosis should be running nslookup to find out which DNS server is used by default and what it's responses are to the domains you are having trouble with. compare the results to a machine that doesn't have a problem (even if it's one at home or another location) to see what doesn't match up.
It sounds like you have not set up a forwarder. As part of your nslookup enable debug options so that you can get a more verbose view of what is going on.

c:\> nslookup
> set type=a
> set d2

If you're DNS server is setup correctly as far as forwarders/hints you should see the query go as follows:

1. (error will be NXDOMAIN)
2. (error will be NXDOMAIN)
3. (resolves via external DNS - at least it should)
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