http://cypherpunk-handbook.i2p/articles/openbsd.html
action=article;sid=20260605064136 . 10.1 - relayd(8) relayd(8) is OpenBSD's relay and application-layer proxy daemon. It
provides reverse proxying, load balancing, health checks, and TLS
handling with a compact configuration model that integrates well with
the rest of the base networking stack. 10.2 - smtpd(8) smtpd(8), from the OpenSMTPD project, is OpenBSD's native mail
daemon in base.