发邮件的有关问题，显示已发送，为什么收不到邮件呢

发邮件的问题，显示已发送，为什么收不到邮件呢？
require 'class.phpmailer.php';
try {
$mail = new PHPMailer(true); //New instance, with exceptions enabled

$body = file_get_contents('contents.html');
$body = preg_replace('/\\\\/','', $body); //Strip backslashes
$mail->IsSMTP(); // tell the class to use SMTP
$mail->SMTPAuth = true; // enable SMTP authentication
$mail->Port = 25; // set the SMTP server port
$mail->Host = "smtp.qq.com"; // SMTP server
$mail->Username = "wanglintao_1@qq.com"; // SMTP server username
$mail->Password = "12345in"; // SMTP server password
$mail->IsSendmail(); // tell the class to use Sendmail
$mail->AddReplyTo("name@domain.com","First Last");
$mail->From = "wanglintao_1@qq.com";
$mail->FromName = "wanglingtao";
$to = "wanglintao_1@163.com";
$mail->AddAddress($to);
$mail->Subject = "First PHPMailer Message";
$mail->AltBody = "To view the message, please use an HTML compatible email viewer!"; // optional, comment out and test
$mail->WordWrap = 80; // set word wrap
$mail->MsgHTML($body);
$mail->IsHTML(true); // send as HTML
$mail->Send()
echo "Message has been sent";
} catch (phpmailerException $e) {
echo $e->errorMessage();
}
?>

------解决方案--------------------
你看看你QQ的SMTP/pop3开通了吗？
------解决方案--------------------
在你的服务器上要有接收邮件的程序，看其是否运行
------解决方案--------------------
看看服务器邮件发送的log 通常在/var/log/maillog
------解决方案--------------------