Re: Accessing local recipient from within an smtpd policy server: how?

[Rahul Dhesi]

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. ...

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.

Rahul