Alf Vark:
>
>
> > On 23/06/2020 21:46, Wietse Venema wrote:
> >
> > The postmaster address is special.
>
> Thanks for confirming that Wietse. I guess this is covered by the
> documentation at http://www.postfix.org/BUILTIN_FILTER_README.html#what.
That text describes header/body checks, which require information
that is not available during RCPT TO command processing.
> The RCPT TO address
> Should that not also apply to "postmaster@*" as well as "postmaster" ?
RFC 2821 requires that "the special case of "RCPT TO:<Postmaster>"
(with no domain specification), MUST be supported.".
Postfix smtpd_mumble_restrictions handle only forms with a domain,
otherwise you would have to specify access rules twice, once with
domain and once without. Therefore, RCPT TO:<Postmaster@example>"
is handled as usual, while "RCPT TO:<Postmaster>" is given a free
pass. It is an imperfect world.
Wietse
