We have a customer with an existing Exchange Server which is "maxed" out with work. They want to move the Server to an ESXI host in a VM environment and then distribute the work between two Servers. My question is what is the best way to move an existing Exchange Server to new hardware, the existing Server is a single Server with all the Exchange roles and I'm familiar with moving mailboxes from one Exch to another using the mailbox migration wizard. I'm thinking just add another Server on the AD from scratch with all roles enabled, then move services across and re-point records etc. The thing I'm concerned about is half way through where mailboxes are located on both Servers, do I need to manually create a routing-group-connector, or is Exchange intelligent enough to route email between the Servers dynamically? I've looked at many articles on the internet but have not found a definitive answer, idealy I would like to "lab" this out but dont have much time.