This issue is usually caused by incorrect encoder settings.
When SAM Broadcaster asks for your publishing point, remember that it’s the “Alias” you’re given in your control panel. For example, if your listen link is mms://wm11.spacialnet.com/demo, your settings would be as follows:
Your username and password follow, and both are case sensitive.
Using HTTP at the beginning of the string is standard. Never use mms:// when pushing or relaying a stream.