PHP: Mail über SMTP schicken

require_once "Mail.php";
function sendMail($to, $subject, $body)
{
        $from = "<foo@example.org>";
        $host = "ssl://smtp.example.org";
        $port = "465";
        $username = "foo@example.org";
        $password = "foobar";
 
        $headers = array (
                'From' => $from,
                'To' => $to,
                'Subject' => $subject);
        $smtp = Mail::factory('smtp', array (
                'host' => $host,
                'port' => $port,
                'auth' => true,
                'username' => $username,
                'password' => $password));
 
        $mail = $smtp->send($to, $headers, $body);
 
        return !(PEAR::isError($mail));
}
 
$erfolg = sendMail("<foo@example.com>", "Foobar", "Lorem Ipsum");