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Server 2008 R2- DNS - unable to resolve single domain - fedex.com

Posted on 2011-11-01
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Last Modified: 2012-05-12
Windows Server 2008 R2
Active Directory
DNS
No antivirus currently installed

I am unable to resolve fedex.com. All other domains are working fine. Its only this one domain. If I statically specify our ISP's dns on a computer instead of the Domain Controller I can resolve it and browse to it. The ISP's dns servers are listed as forwarders, and use root hints is also selected. I have uninstalled and reinstalled the DNS role which did not help.

The network adapter has 127.0.0.1 for the Primary DNS. Server has been rebooted, DNS service has been restarted multiple times.
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Question by:wcoil
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Expert Comment

by:mcsween
ID: 37063149
Try clearing the DNS Cache on the server.  I'm not in front of a server right now but open dnsmgmt.msc and right click either the server node or the forward lookup zone (can't remember which) and select clear cache.

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LVL 22

Expert Comment

by:mcsween
ID: 37063157
You might also try to remove cache locking on the server (set the value to 0)

http://technet.microsoft.com/en-us/library/ee649148%28WS.10%29.aspx
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Author Comment

by:wcoil
ID: 37063231
I cleared the cache in DNS- did not help though, still cant resolve.

I ran the command - "dnscmd /config /cachelockingpercent 0" (completed successfully) Restarted dns service, cleared cache again, ipconfig /flushdns, and tried again - did not help though, still cant resolve.
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LVL 22

Assisted Solution

by:mcsween
mcsween earned 2000 total points
ID: 37063465
I'm curious to see if you can resolve directly through nslookup.  Try this.

start, run, nslookup
server a.b.c.d (where a.b.c.d is your ISP's dns server)
fedex.com
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Author Comment

by:wcoil
ID: 37064871
nslookup using the ISP's dns resolved the address properly.

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Author Comment

by:wcoil
ID: 37069621
Cant Explain this, but this is what worked.

I used OpenDNS's servers as the only forwarders. And now I can resolve fedex.com

208.67.222.222
208.67.220.220

Thanks for the help mcsween
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Accepted Solution

by:
wcoil earned 0 total points
ID: 37069639
Cant Explain this, but this is what worked.

I used OpenDNS's servers as the only forwarders. And now I can resolve fedex.com

208.67.222.222
208.67.220.220

Thanks for the help mcsween
0
 

Author Closing Comment

by:wcoil
ID: 37092837
Fixed the issue.
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LVL 22

Expert Comment

by:mcsween
ID: 37069795
glad you got it fixed up
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