Quick look at OpenSMTPD on OpenBSD 5.1
I want to have a look at a replacement for my Postfix/Dovecot/OpenLDAP mail server using the OpenSMTPd implementation. Not that it doesn’t work ; in fact I don’t get that much mail and everything works like a charm. I just want to see if I can use as much all-inclusive OpenBSD 5.1 daemons.
My SMTP cheat sheet
Today is the day when my SMTP server didn’t want me to relay mail after authentication…
This is probably my fault as I may have change something without remembering it. Anyway, here the commands to use to talk SMTP to your favorite server.
Continue reading…
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 ;