I have a 2003 domain, earlier today we brought on 2 new 2008r2 dc's by extending the schema and domain and then dcpromo both 2 servers. We then demoted the 2003 servers to member servers and shut them down after replication was completed. Everything looks like its running okay, so then I goto ad sites/services and upgrade the forest to 2008 (not r2) and upgrade the domain to 2008 (not r2).
I waited about 30 minutes (small network all lan) and goto install exchange2007sp1 on a 2008 enterprise server, when I get to the pre-req I get an error that no 2003sp1 or higher domain controller could be found and sends me to this link: http://technet.microsoft.com/en-us/library/bb426946(EXCHG.80).aspx I go through it and in Domain Controllers OU I have 2 servers DC1 and DC2 which are both 2008r2 DC/GC. So Im not sure why I would need to run preparelegacyexchangepermissions. There is currently a 2003 exchange w/sp4 that's in native mode and we are going to swing the mailboxes over. The install should be straight forward enough . Any ideas?
