Ori Bani:
> On Wed, Jun 20, 2012 at 9:11 AM, Viktor Dukhovni
> <postfix-us...@dukhovni.org> wrote:
> > On Wed, Jun 20, 2012 at 11:11:57AM +0200, Ralf Hildebrandt wrote:
> >
> >> I recently saw Exim reject/not deliver mail based on this old, expired
> >> draft:
> >> http://tools.ietf.org/html/draft-delany-nullmx-00
> >>
> >> What ever became of that one?
> >
> > It never became a standard, but it is "practiced" informally. ?I
> > think it was a fine idea that got overshadowed by its more ambitious
> > (and in my view largely futile) cousins: SPF and DKIM.
>
> Does anyone have Postfix configured to do this?
All sites that use the features below.
Wietse
reject_unknown_sender_domain
Reject the request when Postfix is not final destination for the
sender address, and the MAIL FROM domain has 1) no DNS A or MX
record, or 2) a malformed MX record such as a record with a
zero-length MX hostname (Postfix version 2.3 and later).
The unknown_address_reject_code parameter specifies the numeri-
cal response code for rejected requests (default: 450). The
response is always 450 in case of a temporary DNS error.
The unknown_address_tempfail_action parameter specifies the
action after a temporary DNS error (default: defer_if_permit).
reject_unknown_recipient_domain
Reject the request when Postfix is not final destination for the
recipient domain, and the RCPT TO domain has 1) no DNS A or MX
record or 2) a malformed MX record such as a record with a zero-
length MX hostname (Postfix version 2.3 and later).
The unknown_address_reject_code parameter specifies the numeri-
cal response code for rejected requests (default: 450). The
response is always 450 in case of a temporary DNS error.
The unknown_address_tempfail_action parameter specifies the
action after a temporary DNS error (default: defer_if_permit).
