Normal Result Codes

ok - The update was successful.

nochange - No changes were made to the hostname(s). Continual updates with no changes will lead to blocked clients.

Input Error Result Codes

nofqdn - No valid FQDN (fully qualified domain name) was specified.

nohost - An invalid hostname was specified. This due to the fact the hostname has not been created in the system. Creating new host names via dynamic DNS clients is not supported.

abuse - The hostname specified has been blocked for abuse.

System Error Result Codes

unauth - The username specified is not authorized to update this hostname and domain.

blocked - The dynamic update client (specified by the user-agent) has been blocked from the system.

notdyn - The hostname specified has not been marked as a dynamic host. Hosts must be marked as dynamic in the system in order to be updated via clients. This prevents unwanted or accidental updates.