Some time ago, when I added three rooms, Exchange 2010 started defaulting users to the "All Rooms" address book instead of the GAL in their Outlook 2010 client. I had all of them run a contacts send receive, full details, and they start to default to the GAL again. This worked for a while, but it seems to have reverted back to All Rooms. What can I do to stop this? I want to do it server side, not have all employees have to perform steps.
I vaguely recall some kind of oddity with adding rooms and getting them to appear. I received advice somewhere, maybe here, to rebuild GAL. Don't 100% recall the steps, but it was via command line.