EnableDNSBL yes | no

Enable DNSBL Query (only exit router)

DNSBLUseCache yes | no

Enable Cache for DNSBL and MX DNS.

DNSBLForceMainDNSServer no | yes

Force to use DNSServer

DNSBLCacheSize 256

Maximum entry in DNSBL cache

DNSBLCacheTTL 3600

Time To Live for DNSBL chache (seconds).

DNSCheckTimeout 500

Timeout in milliseconds (per DNS query).

DNSCheckRetry 1

Number of retry for DNSBL / DNS MX Check.

DNSBLNoCheckNetArea 192.168.0.0/16

Disable the DNSBL to a network area.

You can set the ip address drectly as spam or not via DNSBLIPList parameter:

DNSBLIPList {

    127.0.0.1 OK

    127.0.0.2 SPAM

    127.0.0.3 This is Ok

    127.0.0.8 This is Spam!!

    }

The word SPAM set the ip address as spam.
The word OK unset the ip address as spam.
Use one ip per line.

Tho set the DNSBL server list use DNSBLServers parameter:

DNSBLServers {

    blackholes.easynet.nl

    cbl.abuseat.org

    }

Put a server per line.