we installing an exchange passive CCR node and getting the following error. This cluster spans multiple Active Directory sites. Exchange Server 2007 cannot be installed. Detected Active Directory sites: NY,CA it is actually across 2 subnets and 2 ad-sites as being reported in the error. active node: IP- 192.168.50.xx AD-SITE - NY Passive: IP - 192.168.55.xx AD-SITE - CA the node got created and was identified but exchange install fails. I am using an Exchange 2007 SP1 Setup.exe, The active node is on E2K7 SP3. i got varying responses on the subject - some MS docs say that CCR mutli-site was only supported with SP1 and SP2 & 3 discontinued it, some say its very much supported to have multiple ad-sites and i know this env had a passive node what was working on the ASPEN site coz that is where i last time evicted it from.Sharique 'W@rbuG' Ahmed. 2 b or not 2 b