An OpenBSD E-Mail Server Using OpenSMTPD, Dovecot, Rspamd, and RainLoop

Introduction This tutorial demonstrates a full-featured email server running on OpenBSD using OpenSMTPD, Dovecot, Rspamd, and RainLoop. OpenSMTPD is the default mail server for OpenBSD. Choose a Vultr Compute Cloud instance with plenty of storage for the expected number of users. Preliminary Steps Verify the server’s outbound port status. Set up…