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Split Horizon
Olivier Poitrey edited this page Apr 26, 2020
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In case an internal domain is managed by a private DNS server, it is possible to setup conditional forwarders. Conditional forwarders can be either plain old DNS53 or DoH servers themselves. Several servers can be specified for failover and several with different domain can be used; the first match wins.
sudo nextdns config set \
-forwarder mycompany.com=1.2.3.4,1.2.3.5 \
-forwarder mycompany2.com=https://doh.mycompany.com/dns-query#1.2.3.4
sudo nextdns restart