On Mon, 28 Jan 2019, Jeremy Harris via Exim-users wrote:

On 28/01/2019 10:50, Cyborg via Exim-users wrote:
is anyone of you running TLS 1.3 already ?

It functions fine in the Exim regression-test suite,
on systems having suitable library support.

I've not seen any such connections in production yet.

I see many header lines like:

Received: from smtp.spodhuis.org ([2a02:898:31:0:48:4558:736d:7470]:34422
 helo=mx.spodhuis.org)
 by hummus.csx.cam.ac.uk with esmtpsa (TLSv1.3:TLS_AES_256_GCM_SHA384:256)
 (Exim 4.91) (envelope-from <[email protected]>) id 1f8ZjZ-0007nY-8Q
 for [email protected]; Wed, 18 Apr 2018 00:09:57 +0100

in my exim email folder.

I believe this means that at least the exim server receives TLSv1.3
connections from at least one exim developer
and has been doing so for about nine months.

--
Andrew C. Aitchison                                     Cambridge, UK
                        [email protected]

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