+ * As of charybdis 2.1.3, you can do some keyword substitution on the rejection
+ * reason. The available keyword substitutions are:
+ *
+ * ${ip} - the user's IP
+ * ${host} - the user's canonical hostname
+ * ${dnsbl-host} - the dnsbl hostname the lookup was done against
+ * ${nick} - the user's nickname
+ * ${network-name} - the name of the network
+ *