friendly fire on/off option?

[ExodusS]

It hapen that i get autokick for teamkills cause of grenades tk's , so autoban for an error...
But if you reconnect 2 times after autokick , and if you continue tk's , the server already autoban you.
But i think there is a fail with nickname (im not sure) , you reconnect with a new name and that reset your score.