Sending mail in PHP problem

I tested the PHP code in the knowledgebase to send email to myself, and installed PEAR, it runs w/o errors (final echo stmt. is displayed) but I don't receive any emails. I also tried it w/o using any $port variable, leaving the default unchanged, didn't help. If anyone can help me out, I'd appreciate it. Thanks. Here is the code I'm using:

<?php
ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);
require_once "Mail.php";
$from = "[email protected]";
$to = "[email protected]";
$subject = "Mail.php test email (post reg. forum)";
$body = "Test email sent using Mail.php.";
$port = "587";
$host = "sm06.internetmailserver.net";
$username = "[email protected]";
$password = "xx not shown xx";
$headers = array ('Date' => date('r'),
'From' => $from,
'To' => $to,
'Subject' => $subject,
'Message-ID' => '<' . time() . md5($from . $to) . '@treenimation.net>');
$smtp = Mail::factory('smtp',
array ('localhost' => $host,
'host' => $host,
'port' => $port,
'auth' => true,
'username' => $username,
'password' => $password));
$mail = $smtp->send($to, $headers, $body);
echo "Mail.php test"
?>

 

I made a newbie mistake, I neglected to make the password of [email protected] match the one in my PHP code. Thanks, Martino.