<?PHP
require("class.PHPmailer.PHP");
$mail = new PHPMailer();
$mail->IsSMTP();  

$mail->SMTPSecure = 'tls';

$mail->Host     = "resolver1.opendns.com"; // this SMTP server of my machine
//$mail->Host     = "208.67.222.222";//ip ; which one to use the resolver1.opendns.com or 208.67.222.222 ???

$mail->From     = "xyz@gamil.com;//email id of the person 

$mail->AddAddress("datta.dhonde@coreathena.com");//my email id

$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.';
}
?>

我收到错误“消息未发送.Mailer错误：SMTP连接()失败.”
我没有得到什么问题..？
$mail-> Host =“”;请评论这是什么意思？