Back to the sea ; the mail server (SMTP, IMAP, GreyList, RBL...), episode X
Like I did with NetBSD, this is how to build an almost complete Mail Server with OpenBSD. We’re gonna use a Dovecot IMAP server and a Postfix SMTP server. Postfix will use Dovecot as a SASL service. Both will use LDAP to identify valid users and e-mail aliases. Mail sanitization will be provided by RBL, from Postfix, and by the spamd shipped with OpenBSD.
Complete (almost) Mail Server with NetBSD
Those are the directions I used to setup an almost complete OpenSource Mail server running NetBSD and pkgsrc. The Mail server will feature: E-mail exchange (MX) role on the Internet; E-mail gateway (SMTP) for internal LAN users ; E-mail access (IMAP) for internal LAN users ; Secured (TLS and SASL) access for internal users; Greylisting, RFC check and RBL mail filtering ; Directory (LDAP) for e-mail entries ;