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Re: [ietf-smtp] How to encrypt SMTP?

2019-10-26 20:13:40
On Sat, 26 Oct 2019 21:02:55 -0400, Keith Moore said:

between administrative domains wouldn't look like a huge change.�� Maybe 
it would even be justified as a spam deterrent.

I wonder what percent of spammers would have any problems and if any spam
would actually be blocked.  They were on the bleeding edge of adopting SPF and
similar, after all.

Nor sure I get the analogy.�� AFAIK if Google signed their domains, the 
only things that would break would be broken DNS clients/resolvers doing 
verification, which would hopefully be few in number.

On my more cynical days, I contemplate whether breaking such clients is the
fastest way to get them fixed.....

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