Fixing error while sending message

lib/node_mailer.js

@@ -1,5 +1,5 @@
 /* Copyright (c) 2009-2010 Marak Squires, Elijah Insua, Fedor Indutny - http://github.com/marak/node_mailer
- 
+
 Permission is hereby granted, free of charge, to any person
 obtaining a copy of this software and associated documentation
 files (the "Software"), to deal in the Software without
@@ -8,10 +8,10 @@ copy, modify, merge, publish, distribute, sublicense, and/or sell
 copies of the Software, and to permit persons to whom the
 Software is furnished to do so, subject to the following
 conditions:
- 
+
 The above copyright notice and this permission notice shall be
 included in all copies or substantial portions of the Software.
- 
+
 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
@@ -53,19 +53,21 @@ SMTPClientPool.prototype.send = function send(message, callback) {
   var hostpool = this.servers[message.SERVER.host]
   if(!hostpool) hostpool = {};
   var client = hostpool[message.SERVER.user]
+  var pool = this;
+  var host = message.SERVER.host;
   if(!client) {
     client = hostpool[message.SERVER.user] = new SMTPClient(message.SERVER.host,message.SERVER.port,message.SERVER);
     client.on("close",function() {
-      if(client == hostClients[options.user]) {
+      if(client == hostpool[message.SERVER.user]) {
           //only because this could be crazy long lived and dynamic
-          delete hostClients[options.user];
-          if(Object.keys(hostClients).length == 0) {
-       delete pool.servers[host]
+          delete hostpool[message.SERVER.user];
+          if(Object.keys(hostpool).length == 0) {
+            delete pool.servers[host]
           }
         }
     })
     client.on("empty",function(){
-     delete hostClients[options.user];
+     delete hostpool[message.SERVER.user];
      client.close();})
   }
   client.sendMail(message,callback);