One of our customers is going to deploy Unity 5.x UM mode with their production Exchange 2007. The Exchange 2007 servers will be in cluster mode. Read through the documents from Unity 5.x that Exchange 2007 clustering is not still currently a supported configuration.
But in this case, can we deploy the Unity UM by partnering to the physical IP addresses of one of the exchange servers in the cluster. I understand I will lose the connectivity if that exchange server down, but just want to see if I can work like that.