Php mailer error: SMTP error
<p>I am using php mailer class. I am getting : 
SMTP Error: The following recipients failed: s_deshmukh88@hotmail.com </p>

<pre><code>$mail = new phpMailer();
$body             = "Hello, this is a test mail.";
//$body             = preg_replace('/\\\\/','', $body); //Strip backslashes

$mail-&gt;IsSMTP();                           // tell the class to use SMTP
//$mail-&gt;SMTPAuth   = true;                  // enable SMTP authentication
//$mail-&gt;Port       = 25;                    // set the SMTP server port
$mail-&gt;Host       = "localhost";           // SMTP server
$mail-&gt;Username   = "localhost";     // SMTP server username
$mail-&gt;Password   = "password";            // SMTP server password
//$mail-&gt;SMTPSecure   = "tls";
//$mail-&gt;IsSendmail();  // tell the class to use Sendmail

$mail-&gt;AddReplyTo("name@domain.com","First Last");

$mail-&gt;From       = "name@domain.com";
$mail-&gt;FromName   = "First Last";

$to = "s_deshmukh88@hotmail.com";

$mail-&gt;AddAddress($to);

$mail-&gt;Subject  = "First PHPMailer Message";

$mail-&gt;AltBody    = "To view the message, please use an HTML compatible email viewer!"; // optional, comment out and test
$mail-&gt;WordWrap   = 80; // set word wrap

$mail-&gt;MsgHTML($body);

$mail-&gt;IsHTML(true); // send as HTML

if($mail-&gt;Send()){
    echo 'Message has been sent.';
    }
</code></pre>

<p>What can be the reason ?</p>
