"DC1" and "DC2" - both Server2008, same subnet, same 5 fsmo roles, both Global Catalog enabled, both run DNS. If DC1 is offline, AD seems to be unavailable - cannot login, cannot authenticate for Outlook/OWA/ISA2006 (Exchange 2007 also on same subnet). I suspect this is a DNS issue, but need assistance before diving into the zone. Thanks.
No announcement yet.
One (of two) 2008 DCs will not authenticate