The required plugin / add-in is a windows application that switches to a backup IMAP server if Exchange connection is not available. We have a secondary mail account that will automatically get your email should the Exchange server be offline. I need a plug that will sense Exchange has gone offline (or perhaps a manual click to start with) and use this IMAP account download the email, making it as seamless as possible to the end user. - Compatibility with Microsoft Outlook 2003 and 2007...