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Re: [ietf-smtp] Public Key Look Up

2021-05-12 12:50:27


--On Wednesday, May 12, 2021 18:57 +0200 Alessandro Vesely
<vesely(_at_)tana(_dot_)it> wrote:

...

This is well understood technology - see any company that
intercepts https:// and re-encrypts the user-side traffic
using their own keys.> 
or DKIM.

Neither case provides for end-to-end crypto.  (Hm... possibly
except DKIM for postmaster to postmaster communication,
deploying the binary key as OpenGPG.  Not an alluring
technique.)

And, getting back to the point that John Levine, myself, and
others have been trying to make, there is a world (or at least
several orders of magnitude) of difference between keys
associated with hosts (mail servers, firewall gateways, web
sites, etc.) and those associated with individual users or
mailbox names.

best,
   john

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