I have a physical exchange server 2007 on premise. we are switching the mail server to office 365 and I keep the current server for a while. just in case, things didn't work the way we want. in addition, the server is leased so we have to return the equipment on the time.
we are thinking to virtualize the exchange server because we have already the ESXi 5 host in place. what will be the best way to do it.