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DNS Problem

By cshanyee ·
Hi,

I?m having some problem with my DNS server recently. When I do nslookup,

C>nslookup msn.com
Server: server1.site1.domain.com
Address: 172.30.20.8

DNS request timed out.
timeout was 2 seconds.
*** Request to server1.site1.domain.com timed-out

When I do another query again via nslookup, it able to answer:

C>nslookup msn.com
Server: server1.site1.domain.com
Address: 172.30.20.8

Non-authoritative answer:
Name: msn.com
Address: 207.68.172.246

The gateway is a firewall which forward dns query to ISP DNS server.
The server is able to resolve host in internal domain.
Pls adv what is the reason for DNS request timed out.

Thanks

Shan

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by sgt_shultz In reply to DNS Problem

did you see these:

HOW TO: Troubleshoot DNS Name Resolution on the Internet in Windows 2000
http://support.microsoft.com/default.aspx?scid=kb;en-us;316341

Training: Understanding and Troubleshooting DNS in Windows 2000
http://support.microsoft.com/default.aspx?scid=kb;en-us;330511

Windows 2000 DNS and Active Directory information and technical resources
http://support.microsoft.com/default.aspx?scid=kb;en-us;298448

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by sgt_shultz In reply to

hey, this looks good:
"DNS Request Timed Out" Error Message When You Start Nslookup From a Command Line
View products that this article applies to.
Article ID : 242906
Last Review : November 21, 2003
Revision : 3.0
This article was previously published under Q242906
SYMPTOMS
When you start Nslookup from a command line, the following error message may be displayed:
DNS request timed out

timeout was x seconds
Can't find server name for address xxx.xxx.xxx.xxx: Timed out
Default servers are not available
Default Server: UnKnown
Address: xxx.xxx.xxx.xxx
where xxx.xxx.xxx.xxx is the Internet Protocol (IP) address of the host on which you are attempting to start Nslookup.
CAUSE
When Nslookup starts, it attempts to resolve the IP address of its host's DNS server to its fully qualified domain name (FQDN). If the DNS server does not respond or if the DNS server's reverse lookup zones do not contain a PTR record for the DNS server's IP address, the error message is displayed.
RESOLUTION
If the host is configured to point to itself for DNS name resolution, verify that the DNS service is starting without error and that a PTR record exists in the appropriate reverse lookup zone.

You can manually create the PTR record if your DNS server does not have dynamic updates enabled. If dynamic updates are enabled, you can create the PTR record by typing the following command at a command prompt:
ipconfig /registerdns

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by cshanyee In reply to DNS Problem

At first I thought is the same nslookup problem as ?DNS Request Timed Out error message when start Nslookup from a command line? but is not. Pls refer to below, when query yahoo.com for the first time encountered DNS request timed. However when query for 2nd time, it managed to answer.

C>nslookup
Default Server: server1.site1.domain.com
Address: 172.30.20.8

> yahoo.com
Server: server1.site1.domain.com
Address: 172.30.20.8

DNS request timed out.
timeout was 2 seconds.
*** Request to server1.site1.domain.com timed-out
> yahoo.com
Server: server1.site1.domain.com
Address: 172.30.20.8

Non-authoritative answer:
Name: yahoo.com
Addresses: 216.109.112.135, 66.94.234.13

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Is the DNS issue solve?

by acolyte12 In reply to

i also encountered the same problem?
did you solve this?

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