> We have received info from our ISP informing that Melbourne IT require =
> us to pay some extortion or they will deregister our domain name.
> 
> Is this legal ? ie. monopolistic control, extorting a fee without =
> provision of service, deregistering a service that was obtained through =
> another party, threatening to deregister without proper notification =

A number of ISPs are in the process of preparing a complaint
for the ACCC and the Minister. As you say, there are a lot of
questionable issues, and legal clarity would assist all involved.

MM