; taken from here:
; https://github.com/matteocorti/check_rbl/blob/master/check_rbl.ini
[rbl]
; server=cbl.abuseat.org
; server=bl.deadbeef.com
; server=spamtrap.drbl.drand.net
; server=spamsources.fabel.dk
; server=0spam.fusionzero.com
; server=mail-abuse.blacklist.jippg.org
; server=korea.services.net
; server=spamguard.leadmon.net
server=ix.dnsbl.manitu.net
; server=relays.nether.net
; server=psbl.surriel.com
; server=dyna.spamrats.com
; server=noptr.spamrats.com
; server=spam.spamrats.com
; server=dnsbl.sorbs.net
; server=spam.dnsbl.sorbs.net
; server=bl.spamcop.net
; server=pbl.spamhaus.org
; server=sbl.spamhaus.org
; server=xbl.spamhaus.org
; server=ubl.unsubscore.com
; server=dnsbl-1.uceprotect.net
; server=dnsbl-2.uceprotect.net
; server=dnsbl-3.uceprotect.net
; server=db.wpbl.info
; server=access.redhawk.org
; server=blacklist.sci.kun.nl
; server=dnsbl.kempt.net
; server=forbidden.icm.edu.pl
; server=hil.habeas.com
; server=rbl.schulte.org
; server=sbl-xbl.spamhaus.org
; server=bl.technovision.dk
; server=b.barracudacentral.org
; server=dnsbl.antispam.or.id
; server=dnsbl.inps.de
; server=drone.abuse.ch
; server=dsn.rfc-ignorant.org
; server=dul.dnsbl.sorbs.net
; server=http.dnsbl.sorbs.net
; server=l1.spews.dnsbl.sorbs.net
; server=l2.spews.dnsbl.sorbs.net
; server=misc.dnsbl.sorbs.net
; server=postmaster.rfc-ignorant.org
; server=rbl.spamlab.com
; server=rbl.suresupport.com
; server=relays.bl.kunden.de
; server=smtp.dnsbl.sorbs.net
; server=socks.dnsbl.sorbs.net
; server=spam.abuse.ch
; server=spamrbl.imp.ch
; server=tr.countries.nerd.dk
; server=unsure.nether.net
; server=virbl.bit.nl
; server=web.dnsbl.sorbs.net
; server=whois.rfc-ignorant.org
; server=wormrbl.imp.ch
server=zen.spamhaus.org
; server=zombie.dnsbl.sorbs.net
; server=blackholes.five-ten-sg.com
; server=blacklist.woody.ch
; server=bl.emailbasura.org
; server=bogons.cymru.com
; server=combined.abuse.ch
; server=duinv.aupads.org
; server=dynip.rothen.com
; server=ohps.dnsbl.net.au
; server=omrs.dnsbl.net.au
; server=orvedb.aupads.org
; server=osps.dnsbl.net.au
; server=osrs.dnsbl.net.au
; server=owfs.dnsbl.net.au
; server=owps.dnsbl.net.au
; server=probes.dnsbl.net.au
; server=proxy.bl.gweep.ca
; server=proxy.block.transip.nl
; server=rbl.inter.net
; server=rbl.megarbl.net
; server=rdts.dnsbl.net.au
; server=relays.bl.gweep.ca
; server=residential.block.transip.nl
; server=ricn.dnsbl.net.au
; server=rmst.dnsbl.net.au
; server=spamlist.or.kr
; server=t3direct.dnsbl.net.au
; server=ubl.lashback.com
; server=all.s5h.net
; server=dnsbl.anticaptcha.net
; server=dnsbl.dronebl.org
; server=dnsbl.spfbl.net
; server=ips.backscatterer.org
; server=singular.ttk.pte.hu
; server=spam.dnsbl.anonmails.de
; server=spambot.bls.digibase.ca
; server=z.mailspike.net