On Thu, 28 Jun 2007 17:13:47 -0400, Pete Weiss <[log in to unmask]> wrote:

>SEND= PUBLIC

allows anyone, anywhere to send a message.  I suggest

 Send= Service
 Service= *.uoguelph.ca,uoguelph.ca

That will drop any mail from outside those domains (and you can easily add to
the list if necessary)

>DEFAULT-OPTIONS= REVIEW
>MODERATORS= ALL,[log in to unmask],[log in to unmask]

This should handle the rest of the desired effects.