I've just setup Outlook 2011 for Mac (14.3.9) to work with my corporate IMAP server and have noticed a strange behaviour. When I drag an email out of the inbox into another IMAP server folder, the email gets put in the new folder and disappears from my inbox in outlook, as you would expect. However, if I access my inbox from my iPhone, or via a web interface, the moved email was never deleted from the inbox - so I have one copy in the target folder, and one copy in my inbox.

  What appears to be happening is that Outlook is not syncing the delete of the message from the inbox back to the server. I've tried 'Purge Deleted Items' (no effect), and if I do 'Repair Folder' then I will get back those messages there were supposed to have been moved.

  Does anyone have an ideas? I've gone through all the settings and searched the web and have come up blank.

Rob