Error editing a DNS Zone

I am trying to edit a DNS zone to change the record of a domain to point to a new server.

When I edit them, and hit save I get this msg. Any ideas what it could be and how to fix it?

Error:

zone domain.com/IN: loaded serial 2004032406
OK

Bind reloading on um-066 using rndc zone: [domain.com]
Error reloading bind on um-066: 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.

Zone Modified!

 

 

 

 

Top