"DNS Leaking" happens when your DNS query continues to query your ISP's DNS servers every time you visit a new website, connect to a new server, or fire up a new internet-connected application. Hence, it means that even though your traffic is encrypted, your ISP can clearly see everything you connect to you're going on the internet and every site you visit on the web.
To install DNSCrypt on Mac OS via brew cask
Once installed, enable it and choose a server that is closest to your location for performance.brew cask install dnscrypt
