Many entries "Deny:DNS Error" in Forward traffic log
I noticed in Log&Report -> Forward Traffic pretty many (2-3 entries per second) Deny:DNS error.
That is what it looks like:
On the FortinetGuide Twitter Account I found information:
"If you see #FortiGate forward traffic log Deny:DNS Error, it's not the 'gate blocking DNS traffic. It's just not forwarding failed response."
But what exacly it is? Why these errors are so much? Mail server is not configured properly?
Thanks in advance for your feedback.