add blocklist.de RBL for from and received addresses

conf/modules.d/rbl.conf

@@ -131,6 +131,21 @@ rbl {
             rbl = "ix.dnsbl.manitu.net";
             ipv6 = true;
         }
+
+        blocklistde {
+            symbol = "RBL_BLOCKLISTDE";
+            rbl = "bl.blocklist.de";
+            ipv6 = true;
+        }
+
+        blocklistde_received {
+            symbol = "RECEIVED_BLOCKLISTDE";
+            rbl = "bl.blocklist.de";
+            ipv6 = true;
+            received = true;
+            from = false;
+            ignore_whitelists = true;
+        }
     }
 
     .include(try=true,priority=5) "${DBDIR}/dynamic/rbl.conf"

conf/scores.d/rbl_group.conf

@@ -159,4 +159,14 @@ symbols = {
         weight = 4.0;
         description = "From address is listed in NiX Spam (http://www.dnsbl.manitu.net/)";
     }
+
+    "RBL_BLOCKLISTDE" {
+        weight = 4.0;
+        description = "From address is listed in Blocklist (https://www.blocklist.de/)";
+    }
+
+    "RECEIVED_BLOCKLISTDE" {
+        weight = 3.0;
+        description = "Received address is listed in Blocklist (https://www.blocklist.de/)";
+    }
 }