You might try removing the \r from you $headers string and just use \n.
jeremy
> while($row = mysql_fetch_array($sql_result)) {
> $email = $row["email"];
> $firstname = $row["firstname"];
> $secondname = $row["secondname"];
>
> $headers ="From: mailinglist at pauloakenfold.com\r\nReply-To:
> mailinglist at pauloakenfold.com\r\nTo: '".$firstname." ".$secondname."'
> <".$email.">";
>
> mail($email,$subject,$body,$headers);
> }