18 May
2025
18 May
'25
8:47 a.m.
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