I'm glad to find that smtps [verify] is a documented feature now. https://github.com/OpenSMTPD/OpenSMTPD/commit/d6c4c1b1a5a76cb1ee6e345a3bf2b409b26c088b
Thanks! > On 12 Dec 2024, at 14:27, Ziqin Wang <[email protected]> wrote: > > Hi, > > Is it possible for OpenSMTPD verify client certificate for SMTP > submission over implicit TLS (i.e. smtps in smtpd.conf) like what is > available for the STARTTLS submission (tls-require [verify])? > > Proposed smtpd.conf option for the "listen on" directive: smtps [verify] > > Thanks!
