dnsbl_filter — DNS Blacklist filtering
dnsbl_filter is a module which will query a Domain Name System Realtime Blackhole/Blacklist/Block List to deny access to IP addresses attempting to connect to Gromox services.
The config file location is /etc/gromox/master.cfg; service specific locations are /etc/gromox/http/master.cfg, /etc/gromox/imap/master.cfg and /etc/gromox/pop3/master.cfg.
- This sets the zone suffix to use for queries. If no zone is set, no DNSBL checking takes place.Example: zen.spamhaus.orgDefault: (unset)