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

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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