We have made the move to O365 and because of how my predecessor left things we have a couple of small sites still using our old Exchange Server. they should be off of it in a month or so and then we can shut it down for good. I was wondering what I will need to do for that. I was told I cant just turn it off, but what specifically will I need to do?
Uninstall Exchange? Remove the server from the domain? Run something to clean up AD?