Can't connect to TS3 Server outside of local network

[bkstradling]

version=3.0.0-rc1 build=14468 platform=Linux
Linux Server 2.6.38-8-generic-pae #42-Ubuntu SMP Mon Apr 11 05:17:09 UTC 2011 i686 athlon i386 GNU/Linux

Hey guys, I'm running Ubuntu Server 32 bit and am having problems accessing my server from outside my network. I have the ports forwarded on my router, udp 9987, tcp 30033, tcp 10011. I AM able to connect outside my network using Putty to the TeamSpeak 3 ServerQuery interface, but I can't connect with the client to my server from outside the network. From within my network I have no problems connecting to my server using the TS3 Client. I've called my ISP (Qwest) and they say they aren't blocking any ports... Any ideas?

Thanks guys.

Below is my iptables -L
Chain INPUT (policy ACCEPT)
target prot opt source destination
ACCEPT udp -- anywhere anywhere udp dpt:9987
ACCEPT tcp -- anywhere anywhere tcp dpt:30033
ACCEPT tcp -- anywhere anywhere tcp dpt:10011

Chain FORWARD (policy ACCEPT)
target prot opt source destination

Chain OUTPUT (policy ACCEPT)
target prot opt source destination

[bkstradling]

I just tried to put my server directly behind the modem/router with nothing else attached to the network, and still was unable to connect remotely with the client. I was still able to connect remotely with Putty using the ServerQuery interface.

[bkstradling]

Haha of course I made some stupid mistake. Apparently something else was already using that UDP port. I changed the default UDP port of the TS3 Server and it works beautifully.