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

[Keith Moore <[e-mail]>]

On 10/26/19 9:13 PM, Valdis Klētnieks wrote:
> 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.

Note I did say maybe such a practice would be /justified/ as a spam 
deterrent.   Many things that have been justified in that way, don't 
actually serve that purpose in practice.   From one perspective, the 
greatest effect of spam filtering has been to make Internet email 
unreliable for general use.

But overall I'm a lot more interested in having email universally 
encrypted, than I am in having yet another half-baked spam deterrent.   
But if that's what it takes to get people to do it, it might be a good 
thing.

>> 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.....

It's not like we've never seen cases where breakage helped to fix things.

Keith