Add DNSWL_BLOCKED symbol

conf/metrics.conf

@@ -327,6 +327,7 @@ metric {
         name = "ONCE_RECEIVED_STRICT";
     }
 
+    symbol { name = "DNSWL_BLOCKED"; weight = 0.0; description = "Resolver blocked due to excessive queries"; }
     symbol { name = "RCVD_IN_DNSWL"; weight = 0.0; description = "Sender listed at http://www.dnswl.org"; }
     symbol { name = "RCVD_IN_DNSWL_NONE"; weight = -0.05; description = "Sender listed at http://www.dnswl.org, low none"; }
     symbol { name = "RCVD_IN_DNSWL_LOW"; weight = -0.1; description = "Sender listed at http://www.dnswl.org, low trust"; }

conf/modules.conf

@@ -193,6 +193,7 @@ rbl {
             RCVD_IN_DNSWL_LOW = "127.0.%d+.1";
             RCVD_IN_DNSWL_MED = "127.0.%d+.2";
             RCVD_IN_DNSWL_HI  = "127.0.%d+.3";
+            DNSWL_BLOCKED = "127.0.0.255";
         }
     }