On Wed, 09 Jan 2019 06:31:19 +0530, Viruthagiri Thirumavalavan said:
*mail.example.com <http://mail.example.com> connecting to mail.yahoo.com
<http://mail.yahoo.com> with its IP address*
*yahoo.com <http://yahoo.com> => 220 mail.yahoo.com <http://mail.yahoo.com>
Yahoo ESMTP Service Ready*
*example.com <http://example.com> => EHLO mail.example.com
<http://mail.example.com>*
*yahoo.com <http://yahoo.com> => 250-Hello, nice to meet you,
mail.example.com <http://mail.example.com>*
*yahoo.com <http://yahoo.com> => 250-SIZE 1000000*
*yahoo.com <http://yahoo.com> => 250-8BITMIME*
*yahoo.com <http://yahoo.com> => 250 STARTTLS*
*example.com <http://example.com> => STARTTLS*
*yahoo.com <http://yahoo.com> => 220 Go ahead*
*Key exchange happens here and the rest of the email part is encrypted *
Are you saying all of those parts can be encrypted via DNSSEC+STARTTLS?
What's in there that we didn't already know after the 3-packet handshake?
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