Bind reloading on core using rndc zone: [sonichosting.net] Error reloading bind on core: rndc: connection to remote host closed This may indicate that the remote server is using an older version of the command protocol, this host is not authorized to connect, or the key is invalid.
Thats odd, typically bind works fine on a fresh cpanel install.
In the WHM setup did you set it to Bind 9 yet (by default its set to 8)? Also, what version of CPanel? Try going to the latest stable (93) as if your on an edge release, CPanel has been doing a lot of new DNS work and edge isnt very tested.
Also, have you done the initial nameserver setup in WHM? If not, go and click 'Initial Nameserver Setup' and click ok.