Postfix
My actual Mail system is running OpenBSD. I use the good old “put the bits together and rule the configuration files” way. But there are some times when I fell like a Web GUI would be nice. I never liked solutions like Zimbra or Zarafa so much because they were quite restrictive bundles - it terms of which backend could be use. But that’s what they’re selled for: bundles.
Let’s have a look at what mailserv does and how.Continue reading...
When you host a secondary MX server and the primary SMTP is out of order for more than 5 days, you will start to loose e-mail from the MX backup. There is a (temporary) easy way to deal with this: raise the retention time of the Postfix mail queue.
Edit postfix/main.cf, add
maximal_queue_lifetime = 30d and reload Postfix. You’re done!
Keep an eye on the mail queue while the primary MX is down.Continue reading...
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.Continue reading...
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 ;Continue reading...