On-prem I have 2 Exchange 2016 servers that are load balanced with ARR 3.0
Now I'm going to configure hybrid on both servers.
They need to be directly accessible by Exchange Online on port 25 to enable hybrid mail flow.
Since I want this connection to go to both Exchange servers and since I also want it to be high available, how can I do this?
ARR 3.0 does not support SMTP load balancing if I am correct, right?
Do I need a second public IP for this?
Thanks a lot for the help already!