On Fri, 5 Feb 2021, Wietse Venema wrote:
Postfix is a pipeline of processes; some processes transform addresses
before a message is queued (canonical_maps, virtual_alias_maps),
and some transform addresses in the delivery agent (alias_maps,
$HOME/.forward files). It is not practical for an SMTP daeamon to
predict what all those transformations will do without gaping
security holes like opensmtpd. ...
On 05.02.21 09:00, Rahul Dhesi wrote:
Thanks. I was hoping there might be some easy way to duplicate what
the Postfix smtpd does when it does check_recipient_access or when it
rejects a recipient not found in the local recipient table. Because I
think in these cases it is doing all or almost all table lookups.
My fallback may be to have a cron job periodically query quotas and
add a rejection entry that check_recipient_access will find. But a lot
of overhead there.
I'd like to make script that will resolve aliases to get user from mail
address, just because of different reason.
hopefully, some day I'll do it. See my discussion with wietse some time ago:
https://marc.info/?t=159863160000001&r=1&w=2
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