As far as I know,
SpamAssassin on his own (I think Perl Mail::SpamAssassin).
Amavis, I was using
SpamAssassin binary and daemon (
spamd) plugged into MTA (Postfix via pipe).
My question is: what to do - is it safe to
apt-get remove spamassassin now after installation and configuring of
OS is Ubuntu 14.04 LTS.