i am trying to mock a soap request over https with mock4net:

server = FluentMockServer.Start(port: 8443, ssl : true);
server
.Given(
Requests
.WithUrl("/*")
.UsingPost())
.RespondWith(
Mock4Net.Core.Responses
.WithStatusCode(200)
.WithBody(soapResponse)
);
I am getting the following error when I execute the test:

An error occurred while making the HTTP request to https://localhost:8443/. This could be due to the fact that the server certificate is not configured properly with HTTP.SYS in the HTTPS case. This could also be caused by a mismatch of the security binding between the client and the server.

Any idea on what is going on?