关于用phpmailer发邮件的有关问题

关于用phpmailer 发邮件的问题
小弟刚接触php不久，试着想用phpmailer 发送邮件,但是得到了以下的error message.. The following From address failed: example@163.com

以下是代码，本人学习php时间不长，所以水平不高，希望各位高手能多多帮忙，谢谢大家
require( "class.phpmailer.php ");
$mail = new PHPMailer();
$mail-> IsSMTP(); // telling the class to use SMTP
$mail-> Host = "smtp.163.com "; // SMTP server
$mail-> SetLanguage( "en ", "./phpmailer/language/ ");
$mail-> From = "example@163.com ";
$mail-> AddAddress( "123123123@hotmail.com ");

$mail-> Subject = "First PHPMailer Message ";
$mail-> Body = "Hi! \n\n This is my first e-mail sent through PHPMailer. ";
$mail-> WordWrap = 50;

if(!$mail-> Send())
{
echo 'Message was not sent. ';
echo 'Mailer error: ' . $mail-> ErrorInfo;
}
else
{
echo 'Message has been sent. ';
}
?>

------解决方案--------------------
error message.. The following From address failed: example@163.com

没有这个EMAIL地址嘛