Perhaps you can use what is already included in the Linux Mint install or add a DNS Proxy via the Linux Mint Synaptic Package Manager or Terminal:dnsproxy
Found in the Linux Mint Synaptic Package Manager:
dnsproxy forwards DNS queries to two previously configured nameservers:
one for authoritative queries and another for recursive queries.
The received answers are sent back to the client unchanged.
No local caching is done.
Primary motivation for this project was the need to replace Bind servers with
djbdns in an ISP environment. These servers get recursive queries from
customers and authoritative queries from outside at the same IP address.
Now it is possible to run dnscache and tinydns on the same machine with
queries dispatched by dnsproxy.
Another possible scenario is a firewall where proxy queries should be
forwarded to the real server in a DMZ.dnsmasq
Linux Mint Pre-installs dnsmasq-base (found at least on Mint 11 standard) which is curious as it contains the dnsmasq executable and documentation but NOT the infrastructure required to run it as a system daemon. For that, the Linux Mint user must also use the Synaptic Package Manger or Terminal to install the dnsmasq package.
A Firefox Add-On which works as a DNS Proxy:https://addons.mozilla.org/en-US/firefox/addon/desopa/
DeSopa Source Files for possible Future Linux distributions network wide applications: