hvad er der galdt med min mail sender til et nyhedsbrev

mit script

<?php

$sql_host = "localhost";
$sql_user = "****";
$sql_passwd = "*****";
$db = "****";

$afsendernavn = "webmaster";
$afsendermail = "webmaster@****.dk";
$mailemne = "Nyhedsbrev fra Webmaster";

mysql_connect($sql_host,$sql_user,$sql_passwd);
mysql_select_db($db);

$resgalpics = mysql_query("SELECT count(*) FROM mailliste");
$rowgalpics = mysql_result($resgalpics,0,0);


     
if($sendt == "")
{
    echo "<p>&nbsp;</p>
<p>&nbsp;</p>
<p>&nbsp;</p>
<p align=\"center\">
<a href=\"sendmail.php?sendt=on\" onclick=\"return confirm('Du du sikker på du vil sende NU?');\">
<font color=\"#00FFFF\" size=\"5\" face=\"Arial, Helvetica, sans-serif\"><strong><font color=\"#006600\">Send
  News</font></strong></font></a><br><br><br>Der er $rowgalpics som får mailen</p>";
}
else
{


        error_reporting(63);
        include('class_html_mime_mail.inc');


        define('CRLF', "\r\n", TRUE);


        $mail = new html_mime_mail('X-Mailer: Html Mime Mail Class');


        $text = $mail->get_file('nyhedsbrev.txt');
        $html = $mail->get_file('nyhedsbrev.html');
       
        $mail->add_html($html, $text, './');


        $mail->set_charset('iso-8859-1');



        $mail->build_message();




$res = mysql_query("SELECT * FROM mailliste");

    while ($row = mysql_fetch_array($res))
    {
    set_time_limit(0);    // Timelimit 2 seconds for sending each mail
    $mail->send($row['mail'], $row['mail'], '$domainnavn', '$afsendermail', '$mailemne ');
sleep(1);
flush();
    }
set_time_limit(0);    // Timelimit to finish script


    echo "<p>&nbsp;</p>
<p>&nbsp;</p>
<p>&nbsp;</p>
<p align=\"center\">
<font color=\"#00FFFF\" size=\"5\" face=\"Arial, Helvetica, sans-serif\"><strong><font color=\"#006600\">
  News er nu sendt!</font></strong></font></a></p>";
}
?>