I've added a new domain name, on a dedicated IP address. However, I can't access this domain name via the IP (I can't change the dns yet). How would I make it so I could view the domain contents on the IP address?
It's my understanding, that you can't access any domain by IP only because ISPConfig uses virtual domains.
If you want to test it first. You could add an A DNS entry to a subdomain. e.g. new.mydomain.tld A IP (the IP of your new domain) Add the subdomain under CoDomain without any forward and it will show you the main domain on the new server.