OpenDNS not work

Hi all,
I have my Active Directory and DNS server and all clients need point to this local DNS server for fast user login.

I need to use OpenDNS for internet access by configure as below but it does not work.
/ip dns>
servers: 208.67.222.220,208.67.220.222
dynamic-servers:
allow-remote-requests: yes

if I add opendns ip like this in here: ip dhcp-server network add dns-server=192.168.2.2, 208.67.222.220, 208.67.220.222
all my client will login slowly and does not recognize my AD.

Any suggestion pls.

Use only 192.168.2.2, and add OpenDNS servers as resolvers for your AD DNS.

This way DNS queries will go to AD first; it will resolve local LAN on its own, and use OpenDNS to resolve the rest of queries.