I have 2 domain controllers and want to take a bad one down for maintenance. In Exchange Management Console I set the good domain controller as the configuration controller. But when I take down the bad DC, Exchange stops working (clients mailboxes freeze and the EMC says it can't find the domain).
I can find only one reference to the bad DC in the EMC. That is when I select "Server Configuration", then select the exchange server then click "Properties", then display the "System Settings" tab. In this tab it shows the domain controllers and catalog servers being used by Exchange. In both boxes are listed only the bad DC. But this list is not editable.
Where can I go to change the setting for domain controllers and catalog servers being used by Exchange?
Once I find where to edit this list, can I put both DCs in there so that exchange can use either one if the other is down?