It's a bug, caused by a new  feature which, in the hope of saving network
bandwidth, made DISTRIBUTEd list put up to 5 recipients for the same node
per outbound file, in much the same way as non-DISTRIBUTEd lists do. It's
difficult to  fix, and in  addition it can be  fixed only by  applying an
update on both the source and  sending node, because the source node (the
one with the list) is the only one to know about the concealment, and the
sending node (the one which actually generates the mail file) needs to be
told about it and  act appropriately. This means I need to  find a way to
pass  this information  in  the DISTRIBUTE  job  while remaining  upwards
compatible.  That requires  time. I  have very  little time  to spend  on
LISTSERV these  days, because  the LEP  is going to  start very  soon and
people are  getting frantic  about all  the things  they realize  are not
going to be  ready in time. The  best solution is probably  to remove the
new feature altogether and revert to the previous behaviour.
 
  Eric