Ahh, so you’re seeing all that on one line in the BIND zone?
If so, that may be the issue – I suspect that reference to ns1 and ns2 shouldn’t be there.
You may want to take a peek in System Settings -> Server Templates -> Default -> BIND DNS Domain. Do you see that line in the “BIND DNS records for new domains” textarea?
Not in the way they showed up in your previous comment… is there any way you could paste in the contents of that textarea you have there? We could then help review what you have there, and how to correct it. Thanks!
Anything in that textarea needs to be a valid BIND DNS record. Those two nameservers are indeed domain names, but aren’t a complete DNS record, and would cause BIND to not start.
My suggestion is to remove them… and then, if you wish to use custom nameservers, just list those in the “Additional manually configured nameservers” field.