Using Multiple DNS according to IP's
I have pfsense v.2.4.4-RELEASE-p3 (amd64), I'm using OPENDNS proxy as a default DNS server But I need to make exceptions to some specific IP's to use my ISP DNS to reach youtube and other prohibited sites. thnax
Well via dhcp hand those specific clients your isp dns, or google or 220.127.116.11 etc.. Or set that specific on the client..
If you do DHCP static mappings for these "exception" machines, like @johnpoz says, you simply enter the other DNS server IP addresses in the area highlighted with the red box (see screenshot). You'll have to restart the DHCP server in pfsense, and renew the lease on your client machines for it to quickly take effect.
Thank you for your appreciated support, It's working perfectly.