Confirmation  is  used  for  two   purposes  in  LISTSERV:  security  and
convenience. "Send= Open,Confirm" is a convenience rule: you just want to
make sure  the address  is valid. "Validate=  All,Confirm" is  a security
rule: you  want to make sure  forged commands are not  executed. Security
rules  always  override convenience  rules.  Doing  otherwise would  mean
leaving some doors  wide open while claiming that the  list is secure. To
allow people to leave without  confirmation, simply decrease the level of
security of the list.
 
  Eric