OpenSMTPD is the right answer if you want a general purpose mail server [1] that is secure by default. [2] [1]: https://poolp.org/posts/2021-01-31/january-2021

OpenSMTPD is the right answer if you want a general purpose mail server [1] that is secure by default. [2] [1]: https://poolp.org/posts/2021-01-31/january-2021-opensmtpd-libtls-conversion-and-unix-domain-sockets-support-noosmtpd/ https://poolp.org/posts/2021-01-31/january-2021-opensmtpd-li... [2]: https://www.openbsd.org/security.html https://www.openbsd.org/security.html