$target = get_input_value('_to', RCUBE_INPUT_POST);
if ($cid && preg_match('/^[a-z0-9\-_=]+(,[a-z0-9\-_=]+)*$/i', $cid) && strlen($target) && $target != $source)
{
$target = get_input_value('_to', RCUBE_INPUT_POST);
if ($cid && preg_match('/^[a-z0-9\-_=]+(,[a-z0-9\-_=]+)*$/i', $cid) && strlen($target) && $target != $source)
{