Credit Cards – Messages sent through Email Gateway Defense containing recognizable Master Card, Visa, American Express, Diners Club or Discover card numbers will be subject to the action you choose.Use the following pre-defined data leakage patterns (specific to U.S.) to meet HIPAA and other email security regulations: Predefined Filters – Select the Encrypt action for outbound email messages that contain matches to pre-made patterns in the subject line, message body or attachment.Select Do not encrypt to exempt messages, based on the content, from the outbound encryption policy. You can specify simple words or phrases, or use Regular Expressions. Message Content Filters – Select the Encrypt action for outbound email based on characteristics of the message's subject, header or body.Use the Outbound Settings > Content Policies page to create policies for encryption of outbound message in one or both sections: If a TLS connection can not be established, then the mail will not be delivered. Mail sent to these domains must be transmitted across a TLS connection. To do so, enable Force TLS for each domain on the Outbound Settings > DLP/Encryption page. For DLP, you should require mail to be sent outbound from Email Gateway Defense over a TLS connection. TLS provides secure transmission of email content, both inbound and outbound, over an encrypted channel using the Secure Sockets Layer (SSL) - also known as TLS. For more information about privacy, see the Barracuda Networks Privacy Policy. Only the sender of the encrypted message(s) and the recipient can view the body of an encrypted message. When the Barracuda Email Encryption Service encrypts the contents of a message, the message body does not display in the Message Log.