fortigate custom external DNS Server not reachable or high response time
Hello all, I had generally entered 188.8.131.52 as the primary DNS server and 184.108.40.206 as the secondar DNS Server. Since yesterday morning I had the problem that no more external addresses could be resolved, or resolved very slowly. No matter which external DNS servers I specify, I have the same problem. Server hostname I also enter. There was no change in the FortiGate. If i ping the external DNS servers, no issues <4ms If I use the FortiGuard servers, I do not have this problem.
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