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By afraz293 ·
I am facing a problem I have exiting exchange server 2003, When I used Nslookup command DNS request time out


c.....>Nslookup
server: mail."company".com
Address: 192.168.1.2

>www.google.com (first request)
server: mail."company".com.
Address: 192.168.1.2

DNS request timed out
Timeout was 2 seconds

DNS request timed out
Timeout was 2 seconds

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You might need to reset the DNS..

Clean Your DNS Cache to Fix Browsing Problems2

If you've found yourself hitting DNS errors or 404 pages in your browser but you know your net connection is working fine, it might be time to flush and restart Windows' DNS cache. The How-To Geek shows how to do this in three command line entries, although you might only need the first to see results. After launching a command prompt as an administrator and closing down Firefox (which has its own DNS cache), enter the following:

ipconfig /flushdns
net stop dnscache
net start dnscache


An easier and quicker way of doing this in XP is to:
1) go to Start
2) go to Run
3) Type: services.msc
4) click Enter.
5) Then locate "DNS Client"
6) Right click on it.
7) From there, click Restart
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Put into a .bat file.
@echo off
echo .*** RUNNING IPCONFIG /FLUSHDNS ***
pause
ipconfig /flushdns
echo .*** STOP THE DNS CACHE ***
pause
net stop dnscache
echo .*** START THE DNS CACHE ***
pause
net start dnscache
Or:

@echo off
echo .*** RUNNING IPCONFIG /FLUSHDNS ***
ipconfig /flushdns
echo .*** STOP THE DNS CACHE ***
start /wait net stop dnscache
echo .*** START THE DNS CACHE ***
pause
net start dnscache
That way no pauses, and start /wait forces the batch file to wait until the net stop dnscache finshes before trying to start it

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Commandline-ophobes can also right-click on the connection, either in the Network Connections control panel applet or in the taskbar (if you have it set to always display there), and choose "Repair".
In addition to flushing the DNS cache, this renews the DHCP lease, flushes the NETBIOS cache, and reregisters NetBIOS and IP address with WINS.
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http://lifehacker.com/343211/clean-your-dns-cache-to-fix-browsing-problems

Please post back if you have any more problems or questions.

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