I have created a nameserver on a VPS. I have created a master zone on the nameserver, and this works fine.
I have also created a slave zone for the master. I see that when I update the master zone, then the slave is automatic updated.
Now the VPS I have created is only a nameserver. Now I have a lot of websites on different hosting companies, mostly in directadmin. I want to do the DNS in directadmin on the hosting machines.
Now I want to know if it is possible that when I change the DNS on the hosting machine, that the master zone automatically updates the fields.
It is not possible for me to create a nameserver at the hosting company, because they do not have any unique ip adresses.
This is the reason that I have my nameserver at a different VPS, and just point to my webhosting.