nanog mailing list archives

Re: Trivial change in Public Cert behaviour coming soon


From: Bjørn Mork via NANOG <nanog () lists nanog org>
Date: Sat, 24 May 2025 09:53:49 +0200

John Levine via NANOG <nanog () lists nanog org> writes:

This is a waste of time.  If people want to believe that SMTP clients send
certificates, there's not much I can do to persuade them otherwise.

Let's just disagree then.

But when my secondary MX receives an email and later forwards it to my
primary MX over a mTLS channel, then I call that SMTP.  If you want to
call it submission because the secondary MX operates as an authenticated
client, then fine.

But in any event, I hope we have established that the number of people
affected by the LE change to stop signing client certs rounds to zero.

Sure.


Bjørn
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