osx

OSX: Per domain DNS servers

Teo de Hesselle

• 1 min read

Little known OSX feature (or at least it was new to me):

You can specify a separate DNS resolver configuration per domain. This can be useful to supplement or over-ride VPN connections.

Best of all, it's really easy -- to specify a custom server for mydomain.int, just run:

sudo mkdir /etc/resolver
sudo echo "nameserver 10.10.10.10 > /etc/resolver/mydomain.int

… and that's it.

It's documented in resolver(5), available on apple's website.

Note: You can't use tbhis to override the default resolver. Use System Preferences for that.