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Thanks for the quick responses. &nbsp;I've got a part 2...in my case, my DNS domain name is corp.tc3health.com, but my NetBIOS domain name is not &quot;corp&quot;, but rather tc3health. &nbsp;Is my namespace disjointed?
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Thanks for the quick responses.  I've got a part 2...in my case, my DNS domain name is corp.tc3health.com, but my NetBIOS domain name is not "corp", but rather tc3health.  Is my namespace disjointed?

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Technically, yes - look at scenario 3 in the URL you provided.
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Technically, yes - look at scenario 3 in the URL you provided.

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In the following article: <a href="http://technet.microsoft.com/en-us/library/bb676377%28EXCHG.140%29.aspx" rel="ugc nofollow">http://technet.microsoft.com/en-us/library/bb676377%28EXCHG.140%29.aspx</a><br />
it states that an expected NetBIOS domain name for a DNS domain name of corp.contoso.com would be &quot;corp&quot;. &nbsp;The same article also says &quot;Another disjoint namespace scenario occurs if the NetBIOS domain name of a domain controller does not match the DNS domain name.&quot; &nbsp;Since NetBIOS can only include 15 characters, wouldn't nearly everyone has a disjoint namespace? &nbsp;Is there any scenario where the NetBIOS and DNS names would both be &quot;corp.contoso.com&quot;?<br />
Since, in the example, the NetBIOS domain name is &quot;corp&quot; and the DNS domain name is corp.tc3health.com, would contoso then need to perform remediation based on scenario #3 in the same article?
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In the following article: http://technet.microsoft.com/en-us/library/bb676377%28EXCHG.140%29.aspx
it states that an expected NetBIOS domain name for a DNS domain name of corp.contoso.com would be "corp".  The same article also says "Another disjoint namespace scenario occurs if the NetBIOS domain name of a domain controller does not match the DNS domain name."  Since NetBIOS can only include 15 characters, wouldn't nearly everyone has a disjoint namespace?  Is there any scenario where the NetBIOS and DNS names would both be "corp.contoso.com"?
Since, in the example, the NetBIOS domain name is "corp" and the DNS domain name is corp.tc3health.com, would contoso then need to perform remediation based on scenario #3 in the same article?

Exchnage 2010 and Disjoint Namespace

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.