On Fri, 23 May 2025, Jay Acuna wrote:
Using a client TLS cert with SMTP is an option within the TLS
protocol, and some clients do.
No, that was a misreading of a decades old file in the sendmail distro.
As anyone who rus a mail server knows, in fact SMTP clients do not send
certificates (not to be confused with submission, which is not SMTP, where
a few systems do use privately signed client certs.)
I really wish this zombie argument would die. The people who run mail
systems are not all stupid, and if client certs were useful, someone in
the past 30 years would have tried using them.
R's,
John
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