SSL is an open, non-proprietary security protocol. It has been submitted to the W3 Consortium (W3C) Working Group on Security for consideration as a standard security approach for world wide web browser and servers on the Internet. SSL provides data encryption, server authentication, message integrity, and optional client authentication for a TCP/IP connection between a client and a server, or server and a server.
Using SSL with SIMS ensures security between a mail client and SIMS by encrypting email content sent by the SIMS server to the email client.