Some MAILERS are not sufficiently configured to recognize
the pseudo userids.  Also if the subscriber's e-mail system
generated a "proper' bounce, and the list had been enabled
for auto-delete, this would be a moot conversation ;-)

Finally, one semantic point ...  ONWER-listname does NOT
necessarily map to the list definition operands of * OWNER=
. It DOES map to the list definition keyword * ERRORS-TO=,
which might not have anything to do with any owner e.g., on
one of my lists it maps to a e-mail/BBS gateways where it is
a private BBS viewable by whomever.

To contact non-quiet owners, one uses the pseudo
userid [log in to unmask]

--  co-owner:   INFOSYS, TQM-L, CPARK-L, ERAPPA-L, JANITORS, LDBASE-L, et -L
URL:mailto:[log in to unmask]                  "Are you a bandwidth bandit?"