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.