🚀 go-pugleaf

How can i add a different domain name,(which is not part of the local zone)
to the DNS files ?
I want to host a different domain name for a customer on my network via
virtual hosts using the apache web server.
For example i want to host "_______ . com" and my network default zone is
like "office.au" .
Do I have to make the new host part of the default zone, like
"________.com.office.au" and use aliases like
www. ___ . com?
Or is there another possibility?
I get an error if i just put the original name "______.com" in the
configuration: host is no member of the default "office.au"group.
Can anybody help me?
Thanks