Cleartext Considered Obsolete: Use of Transport Layer Security (TLS) for Email Submission and Access

Cleartext Considered Obsolete: Use of Transport Layer Security (TLS) for Email Submission and Access Windrock, Inc. Oracle This specification outlines current recommendations for the use of Transport Layer Security (TLS) to provide confidentiality of email traffic between a Mail User Agent (MUA) and a Mail Submission Server or Mail Access Server. This document updates RFCs 1939, 2595, 3501, 5068, 6186, and 6409.