The equivalent to the one way bus in Rhino Service Bus is what we in NServiceBus call “Send only mode”.
In short you would use this in endpoints whose only purpose is sending messages, websites are often a good example of send only endpoints. We’ll now take closer look at the code needed to start an endpoint in send only mode.

var bus = Configure.With()
    .DefaultBuilder()
    .XmlSerializer()
    .MsmqTransport()
    .UnicastBus()
    .SendOnly();

bus.Send(new TestMessage());

The only configuration needed when running in this mode is the destination of the messages you’re sending, you can do this either inline or through configuration.

A working sample can be found in the \samples folder of the NServiceBus package.