wie zum senden von smtp-E-mail von localhost

Bekomme ich immer diese Meldung, wenn Sie versuchen, senden von E-Mails von meinem lokalen host.

SMTP Fehler: Konnte keine Verbindung zum SMTP-host. Nachricht konnte nicht gesendet werden.
Mailer Error: SMTP Fehler: Konnte keine Verbindung zum SMTP-host.

unten ist mein code: bitte helfen Sie

HTML:

<?php

//$email and $message are the data that is being
//posted to this page from our html contact form
$email = $_REQUEST['email'] ;
$message = $_REQUEST['message'] ;

//When we unzipped PHPMailer, it unzipped to
//public_html/PHPMailer_5.2.0
require("class.phpmailer.php");

$mail = new PHPMailer();

//set mailer to use SMTP
$mail->IsSMTP();

//As this email.php script lives on the same server as our email server
//we are setting the HOST to localhost
$mail->Host = "localhost";  //specify main and backup server

$mail->SMTPAuth = true;     //turn on SMTP authentication

//When sending email using PHPMailer, you need to send from a valid email address
//In this case, we setup a test email account with the following credentials:
//email: [email protected]
//pass: password
$mail->Username = "[email protected]";  //SMTP username
$mail->Password = "Nov112014"; //SMTP password

//$email is the user's email address the specified
//on our contact us page. We set this variable at
//the top of this page with:
//$email = $_REQUEST['email'] ;
$mail->From = $email;

//below we want to set the email address we will be sending our email to.
$mail->AddAddress("[email protected]", "Usman Ali Siddiqui");

//set word wrap to 50 characters
$mail->WordWrap = 50;
//set email format to HTML
$mail->IsHTML(true);

$mail->Subject = "You have received feedback from your website Etutionhub!";

//$message is the user's message they typed in
//on our contact us page. We set this variable at
//the top of this page with:
//$message = $_REQUEST['message'] ;
$mail->Body    = $message;
$mail->AltBody = $message;

if(!$mail->Send())
{
   echo "Message could not be sent. <p>";
   echo "Mailer Error: " . $mail->ErrorInfo;
   exit;
}

echo "Message has been sent";
?>