Not much information is available for this blacklist except that it states it is a modern RBL utilizing IP reputation checks. They have two levels of listing and suggest graylisting the email for the first level and completely blocking it for the other.
Delisting request can be sent after you lookup the IP in problem from their website.
Is the information on our site wrong or incomplete? You don't want us to monitor your blacklist? Or do you operate a similar blacklist? We would like to hear from you!