OpenChange server and SOGo
There's more good news on the OpenChange front. Julien has been working together with Wolfgang and Ludovic from Inverse recently to leverage the server-side support in OpenChange to provide native Exchange server support in SOGo.
A couple of days ago we announced that there now is an initial version that allows the use of Outlook against a SOGo server through OpenChange.
As far as I know, this is the first time it's possible to actually use Outlook clients with a non-Microsoft Exchange-compatible server without the need for plugins on the Outlook side. And it's all Free Software. Of course, this is just a preview, and not something we'd recommend everybody to run in production yet. But it's exciting to finally see this come together.