TLS encryption in a managed e-mail service environment

摘要

Disclosed are systems and methods for providing transport layer encryption with an intermediate electronic message managing service interposed in a message path of an electronic message to be sent from a sending server to an intended receiving server across a computer network. To implement TLS in such a managed e-mail services context, given that a managed e-mail service is inserted into the message delivery path, the transport layer security protocols are simultaneously established along both the link from the sending server to the managed e-mail service and from the receiving server to the managed e-mail service, with the managed e-mail service providing a "proxy" connection for communication between the sending server and the receiving server.