There is a preexisting other domain which works fine with SSL, using the same keys which proves SSL is in deed working and 443 is open. It also proves that it is a known working key.
In addition, the standard http version for the moved site is working which proves that the configuration is sound in terms of apache, and it is connecting with port 80 for the moved site
The second server is also using an identical security profile as the first, literally the same one in my hosting provider, meaning that all port setting are identical across the first and second server.
Both operating systems are the same, ie the servers are clones from the same parent clone.