FortiGuard Servers are not reachable

Update – 10. November 2021: It seems that the server «45.75.200.89» is not in use anymore – it is «not reachable» at the moment. Please use «194.69.172.53» instead.

Blogpost – 3. November 2020:

From time to time customers noticed that the Fortigate cannot reach the Fortiguard Servers anymore.

This is displayed in the Dashboard or users are complaining that the Webfilter or DNS Filter Service is not working anymore.

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FortiGuard DNS Rating Server (SDNS) unavailable

Last update from 12.05.2021 at 09:40 Swiss local time: We have noticed an improvement in the situation. Some rare rating timeouts still show up from time to time, but the majority of requests are being answered correctly. Also the DNS servers are working as usual again.

We have noticed an increase of support requests regarding the FortiGuard DNS rating service (SDNS) today. Therefore we want to inform you about the following issue.

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