Opensmtpd
Looking at my notes , it seems I haven’t setup an email services server from scratch since 2015. Of course, mine have evolved following OpenBSD updates and upgrades.
Let’s benefits from the fact that I’m migrating from Vultr to OpenBSD Amsterdam to write a few notes about the mail server (re)creation. At the time of writing, OpenBSD is available in version 7.2.Continue reading...
It’s no secret that configuration for OpenSMTPD changed a lot with version 6.4.0. Despite the fact that changes were announced long time ago and that many configuration examples have popped-up, my particular usage wasn’t covered(1). Namely: using OpenSMTPD with Dovecot and Rspamd as chained MTA.Continue reading...
Logs are usefull. Graphs are sexy. Here’s a way to get a view on what happens to your OpenSMTPD traffic, using Web v2.0 tools ; namely Logstash & Grafana.Continue reading...
Looking to replace my old Postfix/Dovecot configuration with more native OpenBSD stuff, I finally ended with a configuration than seems suitable to me. I’ll be hosting virtual users and mail aliases in ldapd(8), smtpd(8) will deal with email receiving/sending and dovecot(1) will be in charge of email delivery using LMTP and email reading using IMAP. Of course, spamd(8) will do a bit of work in front of OpenSMTPD. All of those will run on OpenBSD 5.7.Continue reading...
Those are my notes about configuring OpenSMTPD 5.4.4 and Dovecot 2.2.15 on OpenBSD 5.7. I’ve setup virtual domains and users. In this simple configuration, the virtual users are matched with local users for mail delivery. SMTP submission is authenticated and passwords for all mail services are stored in usual system files. Of course, mail reception is protected by spamd. Here are the directions.Continue reading...