IWUALL is a procedure/list to handle mailing to all employee internally. In order for someone to be able to send mailings to this list they must have permission from the VP level. This is (and should remain) restriced to a few users on camplus.
In Exchange Management Console do a FIND on the mailbox "4every1". Go to the Mailflow Setting tab/Message Delivery Restrictions. Add to the list of allowed senders. Save and exit.
THose who can add this step need to be an administrator in Exchange Management.including Corey Rockey, Ev Webber and Marcia Moon.