"Sender address rejected: not owned by user" error in PHPMailer usage

I have the following php code, what I want is that I receive in my email from the hosting server the user's message with his email in the place DE: so I can answer it.

$nome = $_POST['nome'];
$email_usuario = $_POST['email'];
$assunto = $_POST['assunto'];
$mensagem = $_POST['msg'];
$tipo_mensagem = isset($_POST['tipo_msg']) ? $_POST['tipo_msg'] : "";

require '../model/PHPMailer/PHPMailerAutoload.php';

$mail = new PHPMailer(true);                              // Passing 'true' enables exceptions
try {
    $mail->IsSMTP();
    $mail->CharSet="UTF-8";
    $mail->Debugoutput = 'html';
    $mail->SMTPDebug = 2;                                 // Enable verbose debug output                              // Set mailer to use SMTP
    $mail->Host = 'smtp.umbler.com';  // Specify main and backup SMTP servers
    $mail->Port = 587;  
    $mail->SMTPAuth = true;
    $mail->IsHTML(true);
    $mail->Username = '[email protected]';                 // SMTP username
    $mail->Password = 'minhasenha';                           // SMTP password

    $mail->AddReplyTo($email_usuario, $nome); //AQUI vai o reply-to:

    $mail->AddAddress('[email protected]');
    $mail->Subject = $assunto;
    $mail->Body    = '<h3>Mensagem: '.$tipo_mensagem.'  '.$mensagem.'</h3>';

    $mail->send();
    return 'Message has been sent';
} catch (Exception $e) {
    return 'Message could not be sent. Mailer Error: '.$mail->ErrorInfo;
}

And give me the following error.

  

SMTP Error: The following recipients failed:   [email protected] :: Sender address   rejected: not owned by user [email protected]