SMTP vil ikke sende

Hvorfor kan jeg ikke få følgende til at sende?

    $SMTP = new SMTP();
    if($POP3) $POP3->pop_quit($soket);
    $to = str_replace("\\","",$to); $ar_to = split("; ",$to); for($l=0; $ar_to[$l]; $l++){
    if(eregi("^"."[a-z0-9]+([_\\.-][a-z0-9]+)*"."@"."([a-z0-9]+([\.-][a-z0-9]+)*)+"."\\.[a-z]{2,}"."$",$ar_to[$l]))
    $rcpto[] = "<".strtolower($ar_to[$l]).">"; else $rcpto[] = strtolower($ar_to[$l]);}
    if(!$ar_to[0]) $ar_to[0]=$to;
    $headers = "X-Mailer: phpWebmail (http://dev.max-gamers.net)\r\n";
    $headers.= "Content-Type: text/plain\r\n";
    $mDate=date("D, d M Y H:i:s +0200");
    $headers .= "Date: $mDate\r\n";
    $fp = $SMTP->smtp_connect(chop($smtps[$user]), $smtpp[$user], $smtpauth[$user], $user, $pass);
    $Body = str_replace("\\\"","",$Body);
    $subject = str_replace("\\\\","\\",$subject);
    $subject = str_replace("\\\"","\"",$subject);
    $from = str_replace("\\\"","",$from);
    if($reply_to != "") $headers .= "Reply-To: ".$reply_to."\r\n";
    if($Urgent==1) $headers .= "X-Priority: 1 (highest)\r\n";
    if($ConfirmDelivery==1) $headers .= "Return-Receipt-To: $from\r\n";
    if($ConfirmRead==1) $headers .= "Disposition-Notification-To: $from\r\n";
    $mail = $SMTP->smtp_mail($fp, $from, $rcpto, $subject, $headers, $ar_to, $Body);

Med følgende class:

class SMTP
{

  function smtp_connect($str_Host="localhost",$int_Port=25,$int_Auth=0,$str_User,$str_Pass)
  {

    $qu = "phpWebmail\r\n";
    $fejlmeddelelse = "Det gik ikke helt";
    $noconnect = "Der kunne ikke connectes til $strHost";

    $fp = fsockopen ("$str_Host", $int_Port, $int_Err, $str_Err,1);

    if (!$fp)
    {
      die("$noconnect:
          <br><pre>$int_Err : $str_Err</pre>");
    }
   
    fputs ($fp, $qu, strlen($qu));
    $t[] = fgets($fp,100);
   
    if($int_Auth==1)
    {
        $qu = "AUTH LOGIN\r\n";
        fputs ($fp, $qu, strlen($qu));
        $t[] = fgets($fp, 200);
        fputs ($fp, base64_encode($str_User)."\r\n");
        $t[] = fgets($fp, 200);
        fputs ($fp, base64_encode($str_Pass)."\r\n"); 
        $t[] = fgets($fp, 200);
    }

    return $fp;
  }

  function smtp_mail ($fp, $str_From, $str_To, $str_Subject, $str_Headers, $ar_FTo, $str_Body)
  {
  global $t;
  if (!$fp) die($fejlmeddelelse);
 
  $qu = "MAIL FROM: $str_From\r\n";
  fputs($fp, $qu, strlen($qu));
  $t[] = fgets($fp,100);

  for($z=0;$ar_FTo[$z];$z++){ 
    $qu = "RCPT TO: ".$ar_FTo[$z]."\r\n";
    fputs($fp, $qu, strlen($qu));
    $t[] = fgets($fp, 100);
  }

  $qu = "DATA\r\nFrom: $str_From\r\n";
  fputs($fp, $qu, strlen($qu));

  if ($str_Headers)
  {
    $qu = $str_Headers;
    fputs($fp, $qu, strlen($qu));
  }

  $qu = "To: $str_FTo\r\nSubject: $str_Subject\r\n";
  fputs($fp, $qu, strlen($qu));

  $qu = "\r\n$str_Body\r\n.\r\n";
  fputs($fp, $qu, strlen($qu));
  $t[] = fgets($fp, 100);

  $qu = "QUIT\r\n";
  fputs ($fp, $qu, strlen($qu));
  $t[] = fgets($fp, 100);
  $t[] = fgets($fp, 100);
  fclose($fp);

  return $t;

  }


}