官方討論區的回覆如下: 看來有得等了 answer from fortinet I hope it will be useful
We are aware of a DNS issue with Fortiguard DNS. Currently awaiting an update. Changing your DNS to another provider may resolve the issue. (has for some but not all customers)
Meanwhile I have been requested to escalate all tickets with this issue, so I will do that now and you should hear back shortly,