Basic SenderBase plugin.

plugins/senderbase/senderbase

@@ -0,0 +1,20 @@
+#!/bin/sh
+
+real_ip_address=${ip_address:-$(hostname -I | head -1)}
+
+if [ "$1" = "config" ]; then
+    cat <<EOF
+graph_category mail
+graph_title SenderBase Reputation for $real_ip_address
+graph_info Current reputation from senderbase.org.  Ranges from -10 (very poor) through 0 (neutral) to 10 (very good).
+reputation.label Reputation
+reputation.warning :0
+reputation.critical :-5
+EOF
+    exit 0
+fi
+
+ip_reversed=$(echo $real_ip_address | sed -re 's/^([0-9]+)\.([0-9]+)\.([0-9]+)\.([0-9]+)$/\4.\3.\2.\1/')
+query_host=${ip_reversed}.rf.senderbase.org
+value=$(dig +short $query_host TXT | sed 's/"//g' | head -1)
+echo reputation.value ${value:-U}