Also the name of file is not fixed - you can use any name if you specify the option domain as the first one in that file: domain nameserver 10.1.2.3nameserver 10.1.2.4 But it should be in the /etc/resolver/ directory. For more advanced users, type man 5 resolver in your Terminal, and you'll get a nice description of this mechanism. If you're still unsure, ask your sysadmin, but don't tell him my name :).

This is little more complex if you don't know how reverse DNS works, but another example may give you a hint. to the file 10.in-addr.arpa, and from this moment on, all reverse-lookups for network 10.0.0.0/8 will go to the same servers. Then while in the /etc/resolver directory, copy the file.

Let's say your office IP space is 10.0.0.0/8 (ask your sysadmin if you don't know it). No need to mess with bind configuration and it will work as soon as file created without restarts, reboots, logouts and other radical enforcements.Īlso you may need to setup a reverse-lookup for your domain. From this moment on, all requests for and its subdomains will go directly to specified servers, and all other requests will go to the default server in /etc/nf (this is the server you specify in the Network Preference panel). You create file /etc -> resolver -> with content: nameserver 10.1.2.3nameserver 10.1.2.4 and you're all set. Let's say your office network has local domain name and DNS servers are 10.1.2.3 and 10.1.2.4.

In the simplest case, all you need to do is to create a text file in the directory /etc/resolver/ with the same name as the desired domain, and define the nameservers inside. There are an endless amount of possible configurations, and Mac OS X has a very nice and simple generic way to set up a DNS server's routing. For example, you may want to have a local default DNS server on your laptop and use it for all Internet-related DNS lookups, and use your office DNS servers for all intranet domains resolving when at work. Sometimes it's good to have separate DNS servers for different domains. redirecting requests to different DNS servers based on domain name.

Can you use multiple dns servers mac