"rejected by tracker - Port xxxx is blacklisted"
Your client is reporting to the tracker that it uses one of the default BT ports (6881-6889) or any other common p2p port for incoming connections.
The tracker in question does not allow clients to use ports commonly associated with p2p protocols. The reason for this is that it is a common practice for ISPs to throttle those ports (that is, limit the bandwidth, hence the speed).
The blocked ports list include, but is not necessarily limited to, the following:
* Direct Connect 411 - 413 Kazaa 1214
* eDonkey 4662
* Gnutella 6346 - 6347
* Torrents 6881 - 6889
In order to use the tracker you must configure your client to use any port range that does not contain those ports (a range within the region 49152 through 65535 is preferable, cf. IANA). Notice that some clients like Azureus 2.0.7.0 or higher use a single port for all torrents, while most others use one port per open torrent. The size of the range you choose should take this into account (typically less than 10 ports wide. There is no benefit whatsoever in choosing a wide range, and there are possible security implications).
These ports are used for connections between peers, not client to tracker. Therefore this change will not interfere with your ability to use other trackers (in fact it should increase your speed with torrents from any tracker). Your client will also still be able to connect to peers that are using the standard ports. If your client does not allow custom ports to be used, you will have to switch to one that does.
The more random the choice is the harder it will be for ISPs to catch on to you and start limiting speeds on the ports you use. If we simply define another port range on the forum, your ISPs will start throttling that range also.
Finally, remember to forward the chosen ports in your router and/or open them in your firewall, should you have them.
Sacado de aquí:
http://forums.torrentspy.com/showthread.php?t=24546encontrado en google buscando: "error" "rejected by tracker" "6881"
Básicamente te da el error por estar usando ese puerto, y hay que cambiarlo a uno menos común... entre 80 y 65535, el que se te ocurra.
Salu2.
@Sonic999
P.D.: en vez de bittorrent experimental, usa Bitcomet o Utorrent.
bitorrent :S, aparece un error y no se que es..
Dec 6 2006, 12:25 AM
checa hice esto...me fui a firewall de windows y despues a excepciones agrege un puerto al asar le puse de nombre bt...y reincie el bitorrent despues de llegar al 100% de la primera sscaneada que hace..me salio lo mismo...que estoy haciendo mal?!?! 
:D 
