In older version before 3.0.5.4 and 3.0.5.4p1 I can add MX records for *.sub.domain.com. In new version this records is marked as invalid: "The hostname has the wrong format." My question is WHY? Reported: http://bugtracker.ispconfig.org/index.php?do=details&action=details.addvote&task_id=3469
