StreamSpot uses RTMP for live streaming. Along with this, you'll need to make sure some ports are open on your network/firewall to ensure the stream will send correctly to our servers and in so to your viewers. Here are the port requirements for RTMP:
Outbound -> TCP port 1935 (RTMP), TCP port 80 (HTTP)
If you have any questions on this please reach out to firstname.lastname@example.org.