2.2.13
* Changed Config library back to the old behavior of not interpreting
  "yes", "true", "on", "no", "false", "off" as 0/1 int values. This
  caused problems because this behavior is usually unexpected.
  There is a new convenience function bool_value() in the Config lib.

2.2.12
* fixed problems with mail sending (using dns lookup after mx lookup)
* fixed problems with forward module

2.2.11
* fixed some ldap config bugs

2.2.10
* fixed ldap bind

2.2.9
* better error messages when mx lookup fails (sending mails)
* use port 25 for smtp if no port specified

2.2.8
* fixed bug when sending mails with attachment through the webinterface

2.2.7
* fixed bug when sending mails without specifying a mail server in the config
