i am trying to send email with attachment in PHP using SMTP and PEAR but getting the error as "authentication failure [SMTP: STARTTLS failed (code: 220, response: 2.0.0 Ready to start TLS)]" 

```
<?php
require_once "Mail.php"; // PEAR Mail package
require_once ('Mail/mime.php'); // PEAR Mail_Mime packge

$from = "Your Mom <sender@gmail.com>";
$to = "Me <recepient address@gmail.com>";
$subject = 'Call Me!';

$headers = array ('From' => $from,'To' => $to, 'Subject' => $subject);

// text and html versions of email.
$text = 'Hi son, what are you doing?nnHeres an picture of a cat for you.';
$html = 'Hi son, what are you doing?<br /><br />Here is an picture of a cat 
for you.';

// attachment
$file = 'fromc.xls';
$crlf = "n";

$mime = new Mail_mime($crlf);
$mime->setTXTBody($text);
$mime->setHTMLBody($html);
$mime->addAttachment($file, 'text/plain');

$body = $mime->get();
$headers = $mime->headers($headers);

$host = "smtp.gmail.com";
$username = "xyz@gmail.com";
$password = "xyz";

$smtp = Mail::factory('smtp', array ('host' => $host, 'auth' => true,
 'username' => $username,'password' => $password));

$mail = $smtp->send($to, $headers, $body);

if (PEAR::isError($mail)) {
echo("<p>" . $mail->getMessage() . "</p>");
}
else {
echo("<p>Message successfully sent!</p>");
}
?>`

```

PHP version:1.10.1
PEAR version:7.1.6  

got the code from [here](http://www.sajeconsultants.com/sending-authenticated-smtp-email-with-attachments-using-php-pear-mail/)
please help me to clear the error...