Sorry, included that in my subject....
I did run sa-update, all it says (put it in verbose mode) is that
the rules are up to date.
Initially it did download the rules into
/var/lib/spamassassin/<version>/<more subdirs>.
Those files are still there, but spamd is,
apparently, not seeing them.
Martin Gregorie wrote:
Run sa_update.
SA packages from 3.x onwards don't include the rule set to avoid
installing stale rules.
A good install will have added /etc/cron.d/sa-update to your system. It
runs a daily update at 04:10, but you can run it manually if it hasn't
already picked up a rule set.
Martin