UCS is only reachable with local ip-adress after installation

Hello everybody,

i am a complete newbie with UCS. To use it as a Kopano-server i’ve installed the UCS Core and the Kopano-packages = a normal basic installation of ucs 4.4 without any changes(except kopano-inst) so far.

Why is the UCS only reachable with its ip-adress and not with its fqdn in my LAN? what do i have to configure to reach it with the fqdn? Is there any Howto for this and by the way is there any HowTo to make the UCS reachable via subdomain? I found some instructions, e.g. about the Apache configuration, but this informations are obviously all obsolete since e.g. the file etc/apache2/conf.d does not exist (anymore).