[Rspamd-Users] Rspamd as milter for Postfix and 'discard' forced action

[Ralph Seichter]

I performed more tests. The following configuration combo (#1) does not
work, i.e. Rspamd does not signal Postfix with either SMFIR_DISCARD or
SMFIR_REJECT:

  # /etc/rspamd/local.d/force_actions.conf
  rules {
    FOO_RULE {
      expression = 'FOO_EXPR', action = 'discard'
    }
  }

  # /etc/rspamd/local.d/worker-proxy.inc
  discard_on_reject = false;

The following combination (#2) causes Postfix to REJECT messages:

  rules {
    FOO_RULE {
      expression = 'FOO_EXPR', action = 'reject'
    }
  }
  discard_on_reject = false;

The following combination (#3) causes Postfix to DISCARD message:

  rules {
    FOO_RULE {
      expression = 'FOO_EXPR', action = 'reject'
    }
  }
  discard_on_reject = true;

Of course, #3 causes all nominally rejected messages to be discarded,
which does not help me. I wish to discard only a small subset of
messages. How can I achieve this?

-Ralph