I cannot bind to OD remotely

When I am logged in to my home network I can bind a new machine to OD without an issue, but I cannot bind/authenticate a new machine out side of it even though i have FQDN pointing to my server complete with DNS setup and also an SSL to be sure.

All ports are confirmed open for all my services on the router and yet I can VPN, Profile Manager etc just not able to work with OD unless im connected to the same network the OD server is on even trying to connect to OD using the FQDN says host not found.

Please check if you wish server.bwnetwork.net

Thanks