We have ACC on premise and currently we have only 1 server on which we did installations.
I see another server is prepared and ready but it seems someone from Adobe said my org that ACC does not work 2 servers active. I am sure its absolutely incorrect as app at such a high level cant be running only on one server and if something happens to that server we lost ability to send email notifications.
I am still gathering the info, but it will be great if you have set up with more than one server, i request to pls help me with your archeture diagram and any special settings you did to make it work.
Meanwhile I will gather more info why Adobe said it can only work on one server.