Backyard Billy

First let me thank you WHMCS for a great product, I'm currently on a trial license but I'm definitely going to buy it. I noticed that when SSL mode is on for the connections to WHM it won't connect. But when I try without SSL it works just fine, I do have a firewall on the billing server but it's set to allow external 2087 (I also tried enabling incoming 2087 but no difference). Any help would be greatly appreciated.