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    In short they are starting to indicate to users with icons if you’re MX supports TLS and if messages received from you are properly DKIM signed.

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      I’ll tell you what I really want; I want Google to help identify non-DKIM-compliant forwarders, and convince them to fix their systems. As the operator of a small email domain, it makes me grind my teeth when I send mail to @samth and his school forwards the e-mail to gmail, mangling the subject line en route so that the DKIM check fails and gmail flags my (forwarded) e-mail as spam. I’m certain that gmail has the wherewithal to identify these broken forwarders.