On Tue, Jan 10, 2017 at 02:00:14PM +0000, Dominic Raferd wrote:
> I am puzzling over why postfix fails to pass a response from gmail at
> the end of an outgoing transmission through to
> smtp_delivery_status_filter.
This is because, unlike the case with smtp_reply_filter, the
smtp_dsn_bounce_filter applies only when a recipient is "done",
that is, no further attempts to deliver the message to the recipient
via a an alternate MX host or fallback will be attempted.
Therefore, the table is not consulted with 4XX replies from a
non-final MX host.
--
Viktor.
