I have a 2003 domain with 4 sites. Remote site's #'s 1-3 and "default-first-site-name" Each remote site has 1 dc that has dns and dhcp installed, each is a global catalog, and each site has a subnet assigned to it. the default-first-site-name has 2 dc's, both have dns installed, dc1 holds all the roles, as well as running dhcp and wins, dc2 is the global catalog. Currently the dns setup has each site pointing to dc1 as it's primary and itself as the secondary. dc2 in the default-first-site-name only points to dc1, and has no secondary. I recently had a failure of a dc in the default-first-site-name, as it could not talk to any other dc's (it had dc1 as it's primary and itself as the secondary) What should the proper setup be, ie remote site 1 should have default-first-site-name dc1 as primary and itself as secondary and default-first-site-name dc2 as third. I would like a practical explantion if possible, I've looked over the ms doc's already.