David Woodhouse <dwmw2(_at_)infradead(_dot_)org> writes:
We should avoid such an occurrence. The first publication must prohibit
("MUST NOT") the use of '-all' in records of either scope until such
time as it is later decided that the Internet as a whole is quorate with
respect to whatever reverse-path/header modification is required for
each.
I very strongly disagree. On the contrary, the use of -all should be
encouraged as soon as possible. In the vast majority of cases (the
exceptions being web sites such as greeting cards and 'email this news
item') the forwarding is done by, or on behalf of, the recipient of
the email. That the mail might be forwarded should not be of any
concern to the sending domain which publishes -all MARID DNS
entries. Do not forget that as far as the sender is concerned, the
site doing the forwarding is the intended recipient of the email. So,
it is the recipient's problem and responsibility to accept mail sent
to addresses which are then forwarded to them.