IMPORTANT: Make sure you use the correct bridge for your tenant version
Download the 2.2.8 bridge for the tenant version 2.2.3 or greater
Download the 2.1.5 bridge for the tenant version 2.1.5. For earlier versions contact email@example.com
Outlook Contact Federation Finder (OCFF) is a tool that scans your Outlook for e-mail addresses and then adds each address that is federation capable to your Lync client.
This is experimental so use carefully.