I get this when
someone thinks their address is [log in to unmask] (mail gets to them)
but their email really comes from [log in to unmask] (something
different.)

Unsubscribe them from the current address and resubscribe them from the
other address. Then they can post.

Craig

--
Craig Gjerde, Ph.D.   [log in to unmask]  University of Wisconsin
Associate Director, Office of Medical Education Research and Development
Director, Teachers for Tomorrow Faculty Development
Co-listowner for Family-L Discussion List
http://family.gws.uky.edu/FamL/Family-L.HTM