PHP und Mail Multiple or malformed newlines found in additional header

    $headers = "From: " . $email . "\n";  
	$headers .= "Reply-To: " . $email;  

    $boundary = md5(uniqid(time()));
	
    $headers .= "\n";  
    $headers .= "MIME-Version: 1.0";  
    $headers .= "\n";  
    $headers .= "Content-Type: multipart/mixed; boundary=" . $boundary;  
    $headers .= "\n\n";  
    $headers .= "This is a multi-part message in MIME format\n";  
    $headers .= "--$boundary";  
    $headers .= "\n";  
    $headers .= "Content-Type: text/html; charset=UTF-8\n";  
    $headers .= "Content-Transfer-Encoding: 8bit\n\n";  
    $headers .= $message;
    $headers .= "\n";  
    $headers .= "--$boundary";  
    $headers .= "\n";   
    $headers .= "Content-Type: image/pdf; name=" . basename($file) . "\n";  
    $headers .= "Content-Transfer-Encoding: base64\n";  
    $headers .= "Content-Disposition: attachment; filename=" . basename($file) . "\n\n";  
	
    $filedata = fread(fopen($file, 'r'), filesize($file));  
	
    $headers .= chunk_split(base64_encode($filedata));
    $headers .= "\n";  
    $headers .= "--$boundary--";  

	mail($to, $subject, $message, $headers);
?>