I can't find documentation for the Blocklist section, if there is kindly point me to it.
My question is, when I select lists in the Type of DNSBL field do I still need to provide corresponding URLs in URLs of Blacklists field?
Or is URLs of Blacklists just for custom lists?
How often are the lists refreshed?
Great question....I believe though that the preconfigured drop down choices have the URLs built into the .conf file (or maybe a .conf.add)
As for the question of refreshing, I believe you need to create a cron to do that....at least I did (the cron job tab has a prepopulated task for doing exactly this)
The link below may come in handy as well....:
https://forum.opnsense.org/index.php?topic=9245.0