The radiology department at our company sends billing information via email to an outside vendor at the close of each day. Due to the fact that this is HIPAA protected PHI we have to encrypt the email when it is sent.
We are using Microsoft Outlook 2010/2013, Exchange 2007 and a Sophos ES1100 email encryption appliance. We scan all of the documentation into a PDF file and attach it to an email, marking the email as confidential.
When the Sophos appliance sees the "Confidential" sensitivity setting it will encrypt the email and then send it.
The recipient is using Gmail Business for their corporate email. When the email arrives it has a "winmail.dat" attachment instead of the *.pdf format.
If I send the same email to my Personal Gmail account I receive the *.pdf attachment as I should.
I have set our clients to send as "Plain Text" and "HTML", resent both ways and the same thing happens.
This company we send to is the only recipients that have an issue with the "winmail.dat" deal.
Does anyone have a clue what is going on?