Most of  these addresses were  generated years ago,  by FAL V1.  When ONE
field in the header had a non-Internet address, V1 of FAL rewrote ALL the
fields, even those that did have a correct address. This was fixed in V2.
In general there is no reason to have:
 
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The confirmation  goes to the address  LISTSERV got the message  from. If
that address  is wrong/not working,  this isn't LISTSERV  fault. LISTSERV
can't know whether the address works until it actually tries it, and then
it can't try to guess what the correct address should have been.
 
  Eric