I know the update/ES patch for Exchange 2010 support is coming out later from other postings I've read, etc. But I've had a client replace their Exchange 2007 with a Exchange 2010 server and move all the mailboxes over to the new 2010 server. I didn't know about this, was done on their own.
Now after breaking the news to them, they want to bring the old Exchange 2007 server back online and have it connect to the users on 2010 server.
Is this possible for time being, or what is the best way out of this situation until Unity has Exchange 2010 support?
Should I have them move all the mailboxes back to the old exchange server?