Jim Seymour via Postfix-users:
> On Mon, 3 Nov 2025 16:23:23 +0100
> Edgar Fu? via Postfix-users <[email protected]> wrote:
>
> > Hello,
> >
> > I'm looking for a method to (during a mailbox migration)
> > temporarily reject (not bounce) mails to a specific (or a set of
> > specific) local user(s).
> [snip]
>
> Perhaps I'm missing something, but ISTM check_recipient_access would
> do the trick?
>
> E.g.:
>
> /etc/postfix/main.cf:
>
> smtpd_recipient_restrictions =
> ...
> check_recipient_access hash:/etc/postfix/recipient_checks
> ...
>
> /etc/postfix/recipient_checks:
> [email protected] 450 migration in progress
A similar result can be achieved with transport_maps
/etc/postfix/main.cf:
transport_maps = hash:/etc/postfix/transport
/etc/postfix/transport:
[email protected] retry:450 migration in progress
Just for completeness, a check_recipient_access 'hold' action would
accept a message for that recipient and freeze it in the queue until
it is released with the postsuper -H option. This does not scale
to large numbers of messages, though.
Wietse
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