I'm having a problem that I am at a loss with.
System: Windows 7 64-bit, Outlook 2007, Barracuda Spam & Virus Firewall 300.
When a user attempts to send an encrypted message with an attachment, the recipient receives the message but the attachment has been replaced by winmail.dat. I've tryed multiple "solutions" that haven't worked.
Now the weird thing: I have another user that has the same setup but their messages come through just fine and the attachment is correct. ( I have made sure the settings in Outlook are the same between the two machines).
The way they are sending the encrypted message is this. They create the message and uses the Barracuda Outlook plugin (just puts a button there to click and marks the message for encryption) to mark the email for encryption. They click send and the message hits our mail server which in turn sends the message to the Barracuda that encrypts the message and then sends it to cyberspace. Our mail server is MDaemon v.13.6.0
Any clues or definitive answers on how to fix this problem?