проблемы с кодировкой писем

function sendmail($from_name,$from_address,$message,$subject = '',$to_bcc = array()) {
global $exbb;
@set_time_limit(600);
$headers = 'From: '.$from_name.' <'.$from_address.">\n";
$headers .= 'Reply-To: '.$from_address."\n";
$headers .= 'Return-Path: '.$from_address."\n";
$headers .= "MIME-Version: 1.0\nContent-type: text/plain; charset=windows-1251\nContent-Transfer-Encoding: 8bit\nDate: " . gmdate('D, d M Y H:i:s', time()) . " UT\nX-Priority: 3\nX-MSMail-Priority: Normal\nX-Mailer: PHP\n";
#$to = reset($to_bcc);