mod_firewall: Update chain name for consistency
We keep the old JUMP CHAIN for compat, and in case we add internal
content checking rules in the future.
# This script depends on spam-blocking.pfw also being loaded
# Any traffic that is not explicitly blocked or allowed by other
# rules will be checked against the JabberSPAM server blocklist
%LIST blocklist: https://cdn.jsdelivr.net/gh/jabberspam/blacklist/blacklist.txt
::user/spam_handle_unknown_custom
CHECK LIST: blocklist contains $<@from|host>
BOUNCE=policy-violation (Your server is blocked due to spam)