[pfx] Let's Encrypt question (maybe EKU?)

Byunghee HWANG (황병희) via Postfix-users <[email protected]>
Newsgroups gmane.mail.postfix.user
Organization 金陵 (연원의 마음)
Message-ID <[email protected]>
Until April 9, it worked well as shown below:

<quote>
Received: from yw-0919.doraji.xyz (yw-0919.doraji.xyz [34.138.9.181])
(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)
key-exchange X25519 server-signature RSA-PSS (2048 bits)
client-signature ECDSA (P-256))
(Client CN "yw-0919.doraji.xyz", Issuer "E7" (verified OK))
by yw-1204.doraji.xyz (Postfix) with ESMTPS id
D5D8C69A for <[email protected]>; Wed, 8 Apr 2026 19:12:55 +0000
(UTC)
</quote>

However, starting from April 10, it fails as follows:

<quote>
Received: from yw-0919.doraji.xyz (yw-0919.doraji.xyz [34.138.9.181])
(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)
key-exchange X25519 server-signature RSA-PSS (2048 bits)
client-signature ECDSA (P-256))
(Client CN "yw-0919.doraji.xyz", Issuer "E8" (not verified))
by yw-1204.doraji.xyz (Postfix) with ESMTPS id
4EF278F8 for <[email protected]>; Fri, 10 Apr 2026 16:58:25 +0000
(UTC)
</quote>

short summary: "verified OK" -> "not verified"

Is this related to the LE announcement [1] by any chance?
[1] https://letsencrypt.org/2025/05/14/ending-tls-client-authentication


Sincerely, Byunghee

-- 
^고맙습니다 _布德天下_ 감사합니다_^))//

_______________________________________________
Postfix-users mailing list -- [email protected]
To unsubscribe send an email to [email protected]
signature.asc (application/pgp-signature, 227 B)
-----BEGIN PGP SIGNATURE-----

iHUEARYIAB0WIQRqpiVRMuVtH3ALfA6mdGCB9LBsVwUCadpTmAAKCRCmdGCB9LBs
V26mAQCyd88Xxj89dGNn7A6ikO7agryJO0uqCqXq5cYviGZ+uAD+M2iuKffnjtCY
hX4sDB5rBD7ei7AZEbAQvSLyhFNrXQ0=
=quUX
-----END PGP SIGNATURE-----
lmpx.com only provides a reader for public news (NNTP) servers. It is not affiliated with the servers or forums shown here and is not responsible for the content of articles, which is written by their respective authors.