DNS-O-MATIC to Update OpenDNS Network

Hi,

I'm trying to use the dns-o-matic to update my OpenDNS network. This does not work. I'm using the following URL:

https://updates.dnsomatic.com/nic/update?hostname=NETWORKNAME&myip=MYIP&wildcard=NOCHG&mx=NOCHG&backmx=NOCHG

The URL gives me the reply: nohost

Which URL/arguments do I have to use to update all hostnames and the OpenDNS network?

Greets
Sascha