Hi Logan,
Do you mean your franchisor is using Barracuda email encryption and you want to them be able to send email directly to Office 365?
If so, since the emails are sent from the franchisor’s email server, the settings are in the sender’s server not Office 365. I suggest you contact the Barracuda support to meet your request.
For Office 365 HIPAA/HITECH, there is a article tell us how to sign it and frequently asked questions, please refer to the following link:
http://www.microsoft.com/online/legal/v2/?docid=41
If I have misunderstood anything, please feel free to let me know.
Thanks,
Jason Jiang