Re: Massive change in Public Cert behaviour coming soon

["Elmar K. Bins via NANOG" <nanog () lists nanog org>]

nanog () lists nanog org (Chris Adams via NANOG) wrote:

> > >  https://letsencrypt.org/2025/05/14/ending-tls-client-authentication/
> > Does seem like it might have an impact on SMTP...
>
> Who is using Let's Encrypt web server certs for SMTP client authentication?

More people than you expect, I suppose. Might as well raise my own hand - I
myself could easily do with self-signed, but there are more users that use
trashy A**le tools that won't really budge if you're a non-technical person.

Anyway, this change is not impacting server auth, only client auth, which not
many people outside of larger companies will be using.

El el
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