I don't know what the problem was, but i've found the SMTP at the Host Settings, and it show me an exception when i tryed to test.
But sometime before it was good at testing so, it's just like vitkos says.
1- Find the SMTP Configuration Options at the Host Settings.
2- Enter the e-mail and password, after that you should check it for seen if it's a correct direction. It should show you a good configuration messaje or a bad one.
3- At the case the messaje was successful, you only need to update changes.
i've not passed by this forum before i posted the message...