Question : DNS firewall rule generating a lot of WAN traffic

Why is the DNS firewall rule generating a lot of WAN traffic on a FortiGate 110c Firewall?

Our DC/DNS/DHCP Server is named JERRY and this is the server that's always the top talker.
The Firewall rule that always is identified is the DNS rule - Rule 27

Can anyone please offer any suggestions or possible adjustments I can make to reduce this load on the WAN thereby freeing it up for other WAN applications?

Thanks

Answer : DNS firewall rule generating a lot of WAN traffic

Hi,

Unfortenately i don;t have a DNS console in front of me now but all Microsoft DNS servers have root DNS servers set up. These are about 10 to 15 DNS root servers on the internet, if you don;t delete them and don;t configure some extra settings within your Microsoft DNS server it will use these root hint DNS servers.

Also a good way of telling this is if your computer has your internal DNS as it;s DNS server and you are able to browse external website. Because if you browse the internet, your DNS server needs to query external DNS servers for resolvance..