// include class
	include("Net/POP3.php");
 
	// initialize object
	$pop3 = new Net_POP3();
 
	// attempt connection to server
	if (!$pop3->connect("mail.yourserver.com", 110)) {
		die("Error in connection");
	}
 
	// attempt login
	$ret = $pop3->login($email_login, $email_password);
	if (is_a($ret, 'PEAR_Error')) {
		die("Error in authentication: " . $ret->getMessage());
	}
 
	// print number of messages found
	echo $pop3->numMsg() . " message(s) in mailbox\n";
 
 
	// print message headers
	if ($pop3->numMsg() > 0) {
 
 
		for ($x=1; $x<=$pop3->numMsg(); $x++) {
 
		// for ($x=1; $x<=10; $x++) {
			$hdrs = $pop3->getParsedHeaders($x);
 
 
			if
			( 
				preg_match( '/MAILER-DAEMON/i', $hdrs['From'] ) || preg_match( '/Mail Administrator/i', $hdrs['From'] ) 
					|| 	
				preg_match( '/Returned mail/i', $hdrs['Subject'] ) || preg_match( '/User Unknown/i', $hdrs['Subject'] ) 
			) 
			{
 
 
				// extract the email address from the body
				$mail_body = $pop3->getBody($x);
				$pattern = '/[A-Za-z0-9_-]+@[A-Za-z0-9_-]+\.([A-Za-z0-9_-][A-Za-z0-9_]+)/'; //regex for pattern of e-mail address
				preg_match($pattern, $mail_body, $matches); //find matching pattern
 
				$undeliverable_email = $matches[0];
 
				echo "<b>Remove " . $undeliverable_email . "</b><br/><br/>";
 
// add to database table 'bad_emails' to prevent future mailings to this address
				if( mysql_query("INSERT INTO `bad_emails` (`email`) VALUES ('$undeliverable_email');") ) {
 
				}
 
				// delete the message
				$pop3->deleteMsg($x);
 
			}
 
		}
	}
 
	// disconnect from server
	$pop3->disconnect();