What would be nice is if the servers supported using client side certificates as an authentication factor. It's possible to configure postfix and dovecot to su

What would be nice is if the servers supported using client side certificates as an authentication factor. It's possible to configure postfix and dovecot to support this [1], but I haven't looked into whether it's possible to require both the certificate and the username and password to authenticate. [1] https://blog.mortis.eu/blog/2017/06/dovecot-and-postfix-with-client-cert-auth.html https://blog.mortis.eu/blog/2017/06/dovecot-and-postfix-with...