On the On-premises %BRAND_EXCHANGE_ONLINE_SHORT% Server Organization page, the Detect the optimal %BRAND_EXCHANGE_ONLINE_SHORT% ...

On the On-premises %BRAND_EXCHANGE_ONLINE_SHORT% Server Organization page, the Detect the optimal %BRAND_EXCHANGE_ONLINE_SHORT% server option is preselected and the wizard automatically attempts to detect an on-premises Exchange 2016 Mailbox server. If the wizard is unable to detect a server that meets the requirements for a hybrid configuration, or if you want to use a different server, select Specify a server running Exchange 2010, 2013 or 2016 and enter the fully qualified domain name (FQDN) of the Exchange 2016 Mailbox server.