I`m running the Free Version right now on a Proxmox VE. i want to enable the Blacklist in Rules but is not working. is blacklist available in the free version ?
you cannot add new rules, but you can adapt existing rules - this means you have 4 rules which can be fully customized, also to act as a blacklist. but note, maintaining a blacklist is more or less just a lot of work with just very limited spam reduction.