Before, the ham/spam scripts got the rspamd-ip/port from the environment.
However, when checking the environment of these processes now, it seems
cleared. Maybe the new dovecot version now clears environment? — I couldn’t
find a hint.
In any case, using the common mechanism of injecting the ip/port from where
it’s definately known by the already-used jinja2-mechanism seems reasonably
safe.
