i have already migrated to office 365. when i turn on the old exchange 2010 server the outlook 2016 clients connect to it instead of office 365. i think i need to do this? i am trying to turn it back on so i can do a graceful uninstall of exchange 2010.
You can delete the SCP record altogether using ASDI edit:
Select the “Configuration” naming context
Drill down to:
CN=<Your Org name>\
CN=Exchange Administrative Groups\
CN=<Your Server Name>\
And delete the CN=<Your Server Name> of class serviceConnectionPoint in there