[Rspamd] Fix IP whitelist

data/conf/rspamd/local.d/multimap.conf

@@ -99,4 +99,6 @@ MAILCOW_DOMAIN_HEADER_FROM {
 IP_WHITELIST {
   type = "ip";
   map = "$LOCAL_CONFDIR/custom/ip_wl.map";
+  prefilter = "true";
+  action = "accept";
 }