[Rspamd] Set max_size for AV

[Rspamd] Set higher/lower scores for local fuzzy matches

data/conf/rspamd/local.d/antivirus.conf

@@ -7,4 +7,5 @@ clamav {
   type = "clamav";
   log_clean = true;
   servers = "clamd:3310";
+  max_size = 20971520;
 }

data/conf/rspamd/local.d/fuzzy_group.conf

@@ -3,9 +3,9 @@ symbols = {
         weight = 2.0;
     }
     "LOCAL_FUZZY_DENIED" {
-        weight = 10.0;
+        weight = 15.0;
     }
     "LOCAL_FUZZY_WHITE" {
-        weight = -3.4;
+        weight = -10.0;
     }
 }