When adding an Addon domain, the addon domains DNS namservers need to be set to our DNS servers, the same DNS servers as the main cpanel account domain that you are adding onto uses.
If they are not set correctly you will get this error:
“Sorry, the domain is already pointed to an IP address that does not appear to use DNS servers associated with this server. Please transfer the domain to this servers nameservers or have your administrator add one of its nameservers to /etc/ips.remotedns and make the proper A entries on that remote nameserver.”
If you do receive that error make sure the DNS servers for the addon domain are set correctly as mentioned above. Feel free to contact us for help with any addon domain questions or problems.