Is is possible in Exchange 2007 to configure a server to use specific DC's? Thanks Matt

Hello Matt, Yes, you can use Set-ExchangeServer command with various parameters to include/exclude domain controller & global catalogs. But specifying domain controller may cause problem when it is down so suggest you to exclude a DC if it is not giving proper performance, refer KB298879... Various parameters of Set-ExchangeServer StaticConfigDomainController - This parameter is used to configure a domain controller to be used by the server via DSAccess. StaticDomainControllers - This parameter is used to configure a list of domain controllers to be used by the server via Directory Service Access (DSAccess). StaticExcludedDomainControllers - This parameter is used to exclude a list of domain controllers to be used by the server. StaticGlobalCatalogs - This parameter is used to configure a list of global catalogs to be used by the server via DSAccess. References: Set-ExchangeServer http://technet.microsoft.com/en-us/library/bb123716(EXCHG.80).aspx Exchange Server 2007, Exchange Server 2003, and Exchange 2000 Server may experience performance problems when the PDC emulator is used for DSAccess http://support.microsoft.com/kb/298879