9.12 Understanding Secure Email Communications

MailMarshal allows you to secure outgoing and incoming email using transport layer security (TLS), an implementation of secure sockets layer (SSL). MailMarshal supports the enhanced security of Perfect Forward Secrecy (PFS).

TLS secures the privacy of the communications channel and provides one-way authentication. TLS is generally used to provide a secure (encrypted) transport over which email communications including the headers, body and attachments are delivered. TLS can also assist in verifying server authenticity.

Use TLS when you want to secure your organization’s email from being read by unauthorized users inside or outside of your organization. Secure email may be required if your organization sends or receives mail containing information that is protected under laws, such as the US Health Insurance Portability and Accountability Act (HIPAA).

TLS uses public-private key pair encryption on each MailMarshal server to secure an email communications channel and to authenticate itself to clients.