Secure communication with TLS
With eXpurgate, the contents of e-mails are safeguarded during SMTP transfer by means of TLS content protection.
The TLS ("Transaction Layer Security") protocol (RFC 2246) used is an adaptation of the SSL ("Secure Sockets Layer") technology for secure data transmission between applications that ensures privacy and integrity of the data. TLS comprises two layers that are implemented as protocols, with the "Handshake Protocol" (used to negotiate a data channel) resting on the "Record Protocol" (used for data transmission).