Openbsd

OpenSMTPD, Dovecot and ldapd on OpenBSD 5.7

       2535 words, 12 minutes

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.

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Running nsd and unbound on OpenBSD 5.7

       443 words, 3 minutes

I started replacing Bind with nsd/unbound on previous OpenBSD release. Now it’s time to update to OpenBSD 5.7 and ensure it still works.

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Solve unbound error about root.key

       103 words, 1 minutes

I wrote about running unbound and nsd on OpenBSD 5.6 here . The other day, the VM that runs those went to DDB. On reboot, I got the following error message : unbound: [16897:0] error: ldns error while converting string to RR at15: Syntax error, could not parse the RR's type: spamd: \\[priv\\] unbound: [16897:0] error: failed to load trust anchor from /db/root.key at line 1, skipping unbound: [16897:0] error: failed to read /db/root.key unbound: [16897:0] error: error reading auto-trust-anchor-file: /var/unbound/db/root.key This means “root.key” went broken. To rebuild it, simple run those:

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OpenSMTPD and Dovecot on OpenBSD 5.7

       768 words, 4 minutes

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.

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From Bind to nsd and unbound on OpenBSD 5.6

       652 words, 4 minutes

I’ve been using Bind as a primary, slave or cache name server for all my IT life. But it seems Bind is being kicked out of OpenBSD. So far so good, I’m gonna use what’s provided by my favorite OS to do the job. Here’s how to use nsd and unbound daemons to serve as an internal authoritative DNS nameserver and DNS resolver. Both will be running on the same machine.

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