We have a single domain with 3 sites each site has a
Windows 2003 domain controller. Each DC is configured as a global
catalog. On site 1 we are running Exchange 2003 on a separate server.
When the domain controller on site 1 is shut down, It seems that
Exchange does not use the two other DC's for authentication
Is there some configuration one can make so that Exchange server can
fall back on the other DC's while the one it normally uses is down