Mandatory Transport Layer Security connection encryption

Transport Layer Security (TLS) is an Internet protocol that provides security for all email transmissions—inbound, outbound, and internal. The client and server negotiate a secure connection for the transmission to occur, provided both the client and the server support the same version of TLS.

Forcepoint Email Security uses mandatory TLS as its default encryption method (enabled on the page Settings > Inbound/Outbound > Encryption). Opportunistic TLS is used for other email protection functions.

This article offers some TLS basics, including how and where TLS is used in Forcepoint Email Security. It also covers TLS certificate handling, along with encryption key and certificate signing request (CSR) generation.