totally remove exchange 2016

On the Remove Exchange Server page, you can remove Exchange from the computer.

When you remove Exchange from the computer, the following are removed:

• All server roles.
• All installation files.
• The Exchange server object and all its child objects from Active Directory.

  Important:
  If you used Setup.exe /NewProvisionedServer to provision the server, you must use Setup.exe /RemoveProvisionedServer after Exchange has been removed from the computer to remove the Exchange server object and all its child objects from Active Directory.

Removing Exchange from a computer doesn’t remove any Exchange-related databases or log files. You must remove those files manually.