We may specify an alternative service that does not come preconfigured as long as it adheres to the RFC 2136 standard. Navigate to Services | Dynamic DNS and click on the RFC 2136 tab. Then fill in the appropriate fields using the information provided by your RFC 2136-compliant DDNS provider.
For more information, refer to the Wikipedia Dynamic DNS page: http://en.wikipedia.org/wiki/Dynamic_DNS and to the official RFC 2136 Standard Documentation at http://tools.ietf.org/html/rfc2136