Comment: Re:My old Uni did this. (Score 1) 172
You're confusing transport encryption with message encryption.
HIPPA doesn't require that you use S/MIME or PGP or some other technology to encrypt the content of your mail at rest. But if you're transporting between systems, you need to ensure that privileged data is protected in transit. There are a variety of techniques that allow you to do that, with a range of advantages and disadvantages.