diff -r 000000000000 -r 7f95f8617b0b vendor/swiftmailer/lib/classes/Swift/Transport/SmtpAgent.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vendor/swiftmailer/lib/classes/Swift/Transport/SmtpAgent.php	Sat Sep 24 15:40:41 2011 +0200
@@ -0,0 +1,36 @@
+<?php
+
+/*
+ * This file is part of SwiftMailer.
+ * (c) 2004-2009 Chris Corbyn
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Wraps an IoBuffer to send/receive SMTP commands/responses.
+ * @package Swift
+ * @subpackage Transport
+ * @author Chris Corbyn
+ */
+interface Swift_Transport_SmtpAgent
+{
+  
+  /**
+   * Get the IoBuffer where read/writes are occurring.
+   * @return Swift_Transport_IoBuffer
+   */
+  public function getBuffer();
+  
+  /**
+   * Run a command against the buffer, expecting the given response codes.
+   * If no response codes are given, the response will not be validated.
+   * If codes are given, an exception will be thrown on an invalid response.
+   * @param string $command
+   * @param int[] $codes
+   * @param string[] &$failures
+   */
+  public function executeCommand($command, $codes = array(), &$failures = null);
+  
+}