Well I expected this would be more complicated than defining DNS
blacklist servers list. Hower thanks to great defaults, all you
need is to put list into user defines (separate file which is
included early like
/etc/exim4/conf.d/main/000_localdefs should be best
place):
CHECK_RCPT_DOMAIN_DNSBLS = dnsbl.njabl.org : \
bl.spamcop.net : \
blackholes.five-ten-sg.com : \
cbl.abuseat.org : \
smtp.dnsbl.sorbs.net : \
spam.dnsbl.sorbs.net : \
zombie.dnsbl.sorbs.net : \
web.dnsbl.sorbs.net : \
rhsbl.sorbs.net : \
sbl-xbl.spamhaus.org : \
psbl.surriel.com : \
list.dsbl.org