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SBS2011 Preferred and Alternate DNS Settings.

Posted on 2014-01-16
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Hi.

Our client is using SBS2011 (A swing migration from SBS2003)

We are troubleshooting some DNS issues and when we run DCDiag /test:dns we get some erros.

Looking at their Network card settings I can see that their Preferred DNS server is the IP address of the server, but they have an Alternate DNS server IP address set to a DNS server of their Broadband Provider.

I am sure this is not correct.

Can anyone help / advise please.

Thank you
Regards
Andy
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Question by:AndyKeen
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Cliff Galiher earned 2000 total points
ID: 39785072
You are right. Remove the alternate.
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by:AndyKeen
ID: 39785117
Thank you cliff
Just to clarify - this client has a checkpoint box, then a TMG firewall then their SBS box - do I still remove the alternate?

ALSO

would this existing configuration cause any DNS issues at all?

Thanks again.
Andy
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Assisted Solution

by:Cliff Galiher
Cliff Galiher earned 2000 total points
ID: 39785181
Any machines in an AD domain, including the DCs themselves, should only have DNS servers with the AD zones listed on their NIC settings. Alternates should never be a broadband provider , or even a 3rd party.
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by:AndyKeen
ID: 39785189
Thanks Cliff.

Excellent.
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Author Closing Comment

by:AndyKeen
ID: 39785197
Great result - good answers and stayed engaged - Thank you.
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