Thanks Rhoderick. Just yesterday I was staring at get-mailbox returns trying to figure out why over half of my users mailboxes were reporting back a server that had been decommed last year!

Hi Rhoderick,
I have a question regarding an upgrade from sbs 2011 to 2012 r2 standard and exchange 2013; the problem i'm facing is that the incorrect server is configured to the web based management console. It points to my sbs server instead of the new exchange server. Can you tell me how to change this?