On Mon, 10 Jul 2017 14:48:29 +0200 Frantisek Rysanek wrote: > Dear fellow Debian users, > > it seems that I've found the correct answer. > > In /etc/spamassassin/local.cf, > in addition to the aforementioned: > use_bayes 1 > bayes_auto_learn 1 > I have added: > > use_bayes_rules 1 > > Found when trawling the /usr/share/perl5/Mail directory, > namely discovered in SpamAssassin/Conf.pm.
That's the basis of the Mail::SpamAssassin::Conf man page. use_bayes_rules is 1 by default, it only exists so you can turn-off the rules without disabling learning; if it made any difference then amavis has changed something.