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Running Exchange 5.5 on a PDC

We are currently running Exchange 5.5 SP4/ NT4 SP6a on an older Dell server. We have some new equipment in house and, as a temporary measure, we need to move the Exchange server to a newer -- and hopefully more trustworthy -- box. In the same breath, we also want to get rid of an older Compaq that we're using as a PDC. What are the best practices concerning Exchange 5.5 running on a primary domain controller/backup domain controller? My understanding is that having a PDC and Exchange server on the same machine was not a good idea. The new server would be Windows 2000.

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You are correct. Running Exchange on the same machine as an NT 4.0 PDC or BDC, or on the same machine as a Windows 2000/2003 domain controller (DC), is not recommended.

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This was first published in February 2005

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