On Thu, Nov 21, 2024 at 01:09:35PM -0800, Randy Bush wrote:
> # cat /etc/postfix/milter_header_checks
> /^X-Spam.*YES/ FILTER local:/var/mail/spam
- man 5 transport
- man 8 local
> leaves nothing in /var/mail/spam. as rspamd reports a lot of X-Spam
> headers added, i presume that i am misunderstanding how the FILTER
> works or the local delivery.
The latter. The nexthop for the local(8) transport is not a file to
deliver to, it is just a unique key for concurrency control and should
generally be left unspecified, allowing concurrency to be per-user.
With an explicit nexthop for local(8), all deliveries are to the same
nexthop, so all deliveries are in the same bucket with:
local_destination_concurrency_limit = 2
so there are most two concurrent local(8) deliveries via that FILTER,
the message recipient is still based on the envelope, and may bounce
if not a local user.
I don't think that using local(8) as a content filter is a good idea,
perhaps you meant to instead use "REDIRECT" or "HOLD".
--
Viktor.
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