Added SMTP server plugin, for sending messages from classic MUA \o/

- added subject managing in sendMessage

src/plugins/plugin_misc_imap.py

@@ -26,6 +26,7 @@ from twisted.words.protocols.jabber import error as jab_error
 from twisted.cred import portal,checkers,credentials
 from twisted.cred import error as cred_error
 from twisted.mail import imap4
+from twisted.python import failure
 from email.parser import Parser
 import email.message
 import os,os.path