You could restrict it a bit with the Service= keyword.  We have some lists that only accept mail from our psu.edu domain.  For this, I use headers that look somewhat like

Service= psu.edu,*.psu.edu
Send= Service

 At 2:14 PM -0500 12/20/06, Jeff Kiesel wrote:
>Hello,
>
>Is it possible to configure a list to accept mail from anyone, and not
>require a subscription to the list?
>
>I know it's an odd request, but please humor me...
>
>Thanks,
>~jeff


-- 
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