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2003 Exchange server will not update default dns server

Posted on 2008-10-16
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Last Modified: 2012-05-05
I have a 2003 Exchange Server SP2 that was looking to to an old DC for DNS.  I demoted and retired the old DC and pointed the Exchange server to the new DNS servers.  The Exchange server is still looking to the old non-existant DNS server as the default DNS server and it is verified when I use nslookup.  I have edited the static IP settings in the network configuration and verified that there is no reference to the old DNS server with IPCONFIG/ALL.  Even though it is a static connection, I have tried an ipconfig/registerdns and it did not change the default dns server.  This is a production Exchange server.  I am able to operate for now with static entries to the hosts file.  I have already tried rebooting the machine.  

Old DNS server x.x.x.5
New DNS servers x.x.x.8, x.x.x.13

IPCONFIG/ALL result
DNS Servers . . . . . . . . . . . : x.x.x.8
                                              x.x.x.13

NSLOOKUP result
*** Can't find server name for address x.x.x.5: Non-existent domain
Default Server:  UnKnown
Address:  x.x.x.5
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Question by:swnadmin
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Expert Comment

by:flyingsky
ID: 22732063
can you try flush the DNS? if not working, can you try turn off dns cache?
here's how
http://www.tech-faq.com/flush-dns.shtml
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by:swnadmin
ID: 22733466
I have already tried that.  Sorry I didn't mention it.  Any other ideas?
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swnadmin earned 0 total points
ID: 22733692
The server has dual NICs.  The second NIC was disabled and set to DHCP, but had a static DNS entry for the old DNS server.  Since it was disabled, it did not show up in the IPCONFIG/ALL.  I removed the static DNS entry from the disabled secondary NIC and it resolved the issue.  

Thank you for responding, flyingsky.
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by:flyingsky
ID: 22733708
Glad to hear.
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