Hey ,
I tried today to add my server but it says "GAMETRACKER COULD NOT SCAN THE SERVER" .
I already made what they said in this topic http://www.gametracker.com/games/minecraft/forum.php?thread=58741 . I am sure that it isn't from the firewall becuase I have 2 other servers that are running on the same dedicated server and it could be scanned .
In server_proprietes I edited to . I added :
enable-query=true
query.port=25565
motd=MC.EnterForce.Net

It would still be advisable to check your firewall - just because you opened the ports for the other servers doesn't automatically mean you did so for your minecraft server.

After you add those to your server.properties file, you'll want to give your server a restart so it takes effect.

Isn't from firewall I checked if my ports are open and they are .

tcp6 0 0 0.0.0.0:25565 :::* LISTEN
udp6 0 0 :::25565 :::*


And I even connected to it with localhost . So it's open.

root@srv6:/home/minecraft# telnet localhost 25565
Trying ::1...
Trying 127.0.0.1...
Connected to localhost.

Someone can help me ?

Generally, if you're testing your firewall from within it, it wouldn't really test anything.

Without an actual server posted, it is impossible for us to test scan your server.

Have you confirmed your server is not running any query plugins, like minequery?
Have you tried without mods that are known to break the server query, namely MCPC+ and bungeecord?
Have you confirmed you are not blocking the GT scanner IPs?