Hi, I currently have a single exchange 2016 server with a hybrid connection to office 365.
We only use O365 for exchange protection and archives. All mailboxes are stored internally.
I use a split DNS with a certificate mail.domain.com
I am looking to add a second exchange server in a DAG so that maintenance can be performed on the primary server without any down time.
Looking for a bit of advice about how people would set up a DAG in a hybrid scenario.
I would presume I would set the DAG up internally with an IP Address, change mail.domain.com to point to that IP address.
Make sure I have the cert installed on both exchange servers.
Run the hybrid installation again to add both exchange servers to 365? Or can I only have the one connecting for the hybrid?
Am I correct with how I think I need to set up? Would I need to make any other changes etc?
Any advice is appreciated :)