program/steps/mail/compose.inc
@@ -318,7 +318,8 @@ $fvalue .= $v; if ($v = $MESSAGE->headers->cc) $fvalue .= (!empty($fvalue) ? $separator : '') . $v; if ($v = $MESSAGE->headers->get('Sender', false)) // Use Sender header (#1489011) if (($v = $MESSAGE->headers->get('Sender', false)) && strpos($v, '-bounces@') === false) $fvalue .= (!empty($fvalue) ? $separator : '') . $v; // When To: and Reply-To: are the same we add From: address to the list (#1489037)