Allow the user supplied tlsOptions to overridde the host name used for certification validation.

lib/Connection.js

@@ -1,4 +1,4 @@
-var tls = require('tls'),
+§var tls = require('tls'),
     Socket = require('net').Socket,
     EventEmitter = require('events').EventEmitter,
     inherits = require('util').inherits,
@@ -102,10 +102,11 @@ Connection.prototype.connect = function() {
 
   if (config.tls) {
     tlsOptions = {};
+    tlsOptions.host = config.host;
+    // Host name may be overridden the tlsOptions
     for (var k in config.tlsOptions)
       tlsOptions[k] = config.tlsOptions[k];
     tlsOptions.socket = socket;
-    tlsOptions.host = config.host;
   }
 
   if (config.tls)
@@ -1631,10 +1632,11 @@ Connection.prototype._starttls = function() {
 
     var tlsOptions = {};
 
+    tlsOptions.host = this._config.host;
+    // Host name may be overridden the tlsOptions
     for (var k in this._config.tlsOptions)
       tlsOptions[k] = this._config.tlsOptions[k];
     tlsOptions.socket = self._sock;
-    tlsOptions.host = this._config.host;
 
     self._sock = tls.connect(tlsOptions, function() {
       self._login();