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I have the exchange server now seeing the DC. &nbsp;I tried to delete this question, but you were too quick on the draw. (I used default DC and it then saw the old dead PDC and the new DC).<br />
<br />
I don't know how to clean out the old DCs DNS records.<br />
I don't know what metadata is<br />
3) &nbsp;This is important - I think. I have not done this, don't know if I should, and don't know the right steps to do so.
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I have the exchange server now seeing the DC.  I tried to delete this question, but you were too quick on the draw. (I used default DC and it then saw the old dead PDC and the new DC).

I don't know how to clean out the old DCs DNS records.
I don't know what metadata is
3)  This is important - I think. I have not done this, don't know if I should, and don't know the right steps to do so.

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Always good to have solid advice when faced with a tricky situation<br />
<br />
Thanks
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Always good to have solid advice when faced with a tricky situation

Thanks

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I have a 2012 server (S1) running exchange 2010. I also had a 2008 PDC (S2) and &nbsp;2012 DC (S3). &nbsp;The 2008 PDC failed. I seized FSMO to the 2012 server (S3), but the exchange server (S1) does not see it. It pines for the dead 2008 server (S2).<br />
<br />
Exchange server is not a DC. All servers are part of the same domain. The error I get on the exchange server is that an error occurred when trying to check the suitability of server 'S2'. Error 'Active directory response: The LDAP server is unavailable.<br />
<br />
Help is needed. &nbsp;Thanks.
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I have a 2012 server (S1) running exchange 2010. I also had a 2008 PDC (S2) and  2012 DC (S3).  The 2008 PDC failed. I seized FSMO to the 2012 server (S3), but the exchange server (S1) does not see it. It pines for the dead 2008 server (S2).

Exchange server is not a DC. All servers are part of the same domain. The error I get on the exchange server is that an error occurred when trying to check the suitability of server 'S2'. Error 'Active directory response: The LDAP server is unavailable.

Help is needed.  Thanks.

Exchange 2010 running on 2012 server does not see new PDC

Windows Server 2012 is the server version of Windows 8 and the successor to Windows Server 2008 R2. Windows Server 2012 is the first version of Windows Server to have no support for Itanium-based computers since Windows NT 4.0. Windows Server 2012, now in its second release (Windows Server 2012 Release 2) includes Foundation, Essentials, Standard and Datacenter, and does not support IA-32 or IA-64 processors.

Windows Server 2012

Windows Server 2008 and Windows Server 2008 R2, based on the Microsoft Vista codebase, is the last 32-bit server operating system released by Microsoft. It has a number of versions, including including Foundation, Standard, Enterprise, Datacenter, Web, HPC Server, Itanium and Storage; new features included server core installation and Hyper-V.

Windows Server 2008

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.