If you are relaying another stream, you must keep a few things in mind. At SHOUTcastLive.com we run a firewall on our server to protect you (and us) from attacks from hackers / spammers.
Certain ports are BLOCKED and the firewall will allow no traffic to pass through.
If you are relaying another IP adress and the port number is in the following range:
6012, 6013, 8000 to 8300, 8800, 8801, 9000 to 9100
Please contact us if you have any issues with this, we will be happy to help.