After further manual reading it seems that system_filter is called
'after' the message is accepted but before it is delivered. This is
bad since it will create bounces instead of rejects.
Matt
> Spamassassin scores messages on our server with a header like so.
>
> X-Spam-Level: *****************
>
> With the number of astericks indicating its spam score.
>
> Will this added to system_filter.exim block all messages that score over 15?
>
> if $header_x-spam-level: contains "***************" then
> fail text "This message has been rejected due to spam content.\n\"
> seen finish
> endif
>
> Matt
>
