Hello,
I am trying to installed Exchange 2010 on a server 2008 R2 x64 server.
I keep getting an error saying that Coexistance between exhange server 2010 and exchange servers older than Exchange 2007 SP2 in the same Ad site is not supported.
We have 1 exchange 2007 SP3 server in the environment at the moment.
We used to have a failover cluster setup when SP1 was the latest update available. Those servers were removed from the environment a couple years ago and all instances removed from active directory and DNS.
It looks like one of the servers was not decommisioned correctly and so I am getting this error. Is there any way to fix this without using the setup m:restoreserver
I do not know the setting or names of the old servers (a different tech did that project). Please help.