On 28/09/2021 23:41, Viktor Dukhovni via Exim-users wrote:
   - fast-ramp queue run
   - native SRS
   - TLS resumption

I'd like to ask, if I may, how TLS resumption interacts with DANE or
other authenticated TLS policy, assuming potential earlier
unauthenticated TLS connections to the same IP:port or name:port on
behalf of some other domain (or via an alternate "router") which did not
require an authenticated connection, or otherwise had a different set of
TLS requirements.

If enabled for a target host (default being no)
then the session cache lookup key is the unadorned IP.

   - faster TLS startup

May I ask what this means?

Caching of the CA bundle, and similar setup,
by loading it in the daemon process (which forks
for receive processes).
--
Cheers,
  Jeremy

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