I believe you can solve your problem by changing:

     Validate= Yes
to
     Validate= Yes,Confirm
or
     Validate= All,Confirm

For a detailed discussion of the Validate= statement and its operands,
see <http://www.lsoft.com/manuals/1.8d/owner/appendb.html#keyValidate>.

If the list is explicitly configured to allow only editors to post,
there is no need to use "set ... nopost for *@*".

--
Paul Russell
Senior System Administrator
University of Notre Dame