We are running Sharepoint and Crm on its own server. Recently we upgraded our Primary domain controller to Windows Server 2012. We still have an old backup domain controller in place that is running windows server 2003. We plan on replacing the windows server 2003 backup domain controller with a new windows server 2012 machine as the backup dc. We noticed when the backup domain controller is shutdown or rebooted that we lose our connection with sharepoint. What configuration changes are needed in Sharepoint and crm so they look to the new domain controller?