I am working with a site that has 2 servers running side by side. I am not the one that started this. There was originally exchange server 2010 running. There was an exchange server 2013 brought online. I think the mailbox storage is on the 2013 server. If you take the 2010 server offline the mail completely stops.
I am a little new to exchange server and want to know what steps that need to be taken to fully migrate 2010 to the newer 2013 exchange server.
Any and all help to reach this end would be highly appreciated