This video discusses how to set up Hosted CanIt to add a DKIM signature to your outbound mail.
This abridged version contains all the information a realm administrator on Hosted CanIt needs to know. If you are running CanIt on-site, please see the full DKIM-signing video for site-wide administrators.
[NOTE: Best viewed in 1280 x 720. Double-click video and/or use lower-right controls for better resolution]