On 2020-04-03 17:42 BST, Roberto Carna wrote:
> Internet --> [email protected] REJECT
> [email protected] --> [email protected] PERMIT
>
> Is it possible?
Yes, with check_recipient_access. Set it to a list of the
internal-only aliases, rejecting all of them. E.g.
smtpd_recipient_restrictions =
...
check_recipient_access hash:/etc/postfix/check-recipient-access-inbound
In check-recipient-access-inbound,
internal-only@ REJECT My hovercraft is full of eels
Ensure it's set for smtpd only and not for submission.
HTH,
--
Nick
