- Applied fixes from trunk up to r5150

alecpl

2011-08-31 b08caf5813c43e8648cdf5db1e003b3046a37c2c

 program/steps/mail/func.inc

@@ -1448,7 +1448,7 @@
{
  global $RCMAIL, $IMAP;

  if (!is_a($message, rcube_message))
  if (!is_object($message) || !is_a($message, rcube_message))
    $message = new rcube_message($message);

  if ($message->headers->mdn_to && !$message->headers->mdn_sent &&