Le 22/02/2023 à 15:18, Wietse Venema a écrit :
itan...@univ-brest.fr:
Hello,
we're trying to use content-filter instead of
sender_dependant_relayhost_map.
Why?
Previously, this sender_dependant_relayhost_map was just a call to an
api and returns a score based on mailfrom.
We now add others source that are allowed to spoof mailfrom, so there's
logic to parse headers.
As these headers can have unexpected content, we prefer to use a
content-filter in case of encoding issue or other strange behavior.
So we are after-queue and mails are not bounced if our content-filter
panics.
This content-filter sends directly mail, no return to Postfix.
When mail is undeliverable, how shall this filter send the
non-delivery notification?
We decide to inject it back to Postfix and Postfix use default transport.
We're facing an issue with bounce and empty From.
Using sender_dependant_relayhost_map, fails back to a default tranpsort.
In fact, you can use empty_address_default_transport_maps_lookup_key
for explicit handling of the null sender.
Thansk a lot, this may be an easier solution.
With a content-filter, all mails go to it, precedence
That depends on how you specify the filter and how the bounce
arrives. If the bounce arrives via SMTP, you can specifiy a different
filter for the null sender, or override the content_filter parameter
setting.
Using 'empty_address_default_transport_maps_lookup_key' can allow to use
a different filter?
Wietse
