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DNS issue after migration from sbs 2011 to 2012 std.

Posted on 2013-05-14
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Last Modified: 2013-06-17
Hello and thank you for your attention to my question. Your input is always appreciated and expertise greatly valued.

Background: Two server SBS_2011 (old) and Server_2012 std. (new). I migrated all roles to new server. Old server is still running exchange as we are migrating to hosted service.

I joined the new server to domain and migrated all the FSMO roles. There was no issues and all went well. The old server is still on the domain as it runs exchange. I did not want to demote as i was afraid this might affect exchange.

Below is a screen shot of the DNS on new server.
Why are there two DNS servers listed under CMDDFS03. I also ran BPA on DNS and got two warnings I think might be related.
catalyst-dns.JPG
catalyst-dns-2.JPG
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Question by:CMITStamford
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by:markusdamenous
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Not sure, but guessing that the SBS2003 limitation still applies which says that SBS server has to hold all the FSMO roles.  This may cause you a problem after 7 days if it hasn't already started warning.  (Forgive me if this rule has since been relaxed).

You don't want to demote the server that has exchange on it.  Wait until the migration to hosted is complete, then gracefully remove the server from the domain.  You'll need to read an article on this.

I think that the duplication in DNS is fine.  Just showing the same server, but using its NETBIOS  and DNS names.  Try to remove one, by right clicking on it.
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by:CMITStamford
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Hello  markusdamenous thank you for your input.

When I right click the two listed DNS server, I don't see a remove option only Delete.
Not sure how confident I feel deleting as I'm not certain which one I should remove.

When I right click the drop down menu for both has different options.

Thank you...
catalyst-dns.JPG
catalyst-dns-2.JPG
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markusdamenous earned 500 total points
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You can delete without issue.  It won't uninstall dns from that server, just remove the entry from the console.

See this Microsoft article for reassurance.

http://technet.microsoft.com/en-us/library/cc739251(v=ws.10).aspx
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