A new try with some lists, which came up in the past:
rhsbl.rbl.polspam.pl as RHSBL
lblip4.rbl.polspam.pl as IP addresses of RHSBL
rblip4.rbl.polspam.pl as spammers IPs
Will see next day, if it was worth.
RHSBL has been removed already again as it has only false-positives yet. Will check the two remaining lists the next days.