Meanwhile, does SMTP have something like HTTP Strict Transport Security? It would be nice for an impartial party to compile a list of mail servers that pledge to accept encrypted connections, and for sending MTAs to treat it as a connection failure if the destination is on that list but doesn't appear to support encryption.
Meanwhile, does SMTP have something like HTTP Strict Transport Security? It would be nice for an impartial party to compile a list of mail servers that pledge to accept encrypted connections, and for sending MTAs to treat it as a connection failure if the destination is on that list but doesn't appear to support encryption.