On Tue, Sep 17, 2024 at 07:20:18PM +0800, Wesley via Postfix-users wrote:
>
>
> Viktor Dukhovni via Postfix-users :
> > - Just inbound mail from external sources? Or also other mail (locally
> > submitted or generated)?
>
> yes I just reject message to that user from external source via smtp, does
> that setting work?
Yes, as noted in my original reply.
> > - What is the address class of "domain.com"?
>
> sorry what do you mean here?
https://www.postfix.org/ADDRESS_CLASS_README.html
Another way to reject mail from outside is to be sure exclude the
address from the associated list of valid recipients as well as
virtual_alias_maps, canonical_maps, ... This gives senders a
possibly more appropriate message (address does not exist).
Note also that a user who cannot receive inbound mail, should typically
also not be able to send outbound mail (to which nobody can reply, and
for which any sender-verification probes by receiving systems would fail).
--
Viktor.
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