Percentage for matching with RBL and postfix. How to do without SpamAssasin?

Question

Email

Has its own post office. I would like to use RBL, but only as an advisory tool, i.e. add points in the spam rating, on the basis of which a decision is made. What can it do, except for SpamAssasin, otherwise it is too heavy for my GVA. I use postfix+dspam.

Answer 1

I asked myself, figured it out myself, I'll answer it myself:
This is done through postscreen .
Parameters:
postscreen_dnsbl_sites
postscreen_dnsbl_threshold
Well, in general, a useful utility for fighting spam. Included, like, since version 2.8.