I am hoping someone can help me,
We have an internal DNS server that our Astaro box uses ad a DNS Forwarders (As well as open DNS as back up). Ever day, since Tuesday all internal traffic will stop responding and time out either trying to connect to an internal server or an external server. This only occurs on boxes that use the firewall as their primary DNS server. If I set our internal DNS server as the primary server the machine will work and connect fine.
I have tried flushing the DNS to no avail. Adding and removing the Allowed Networks to no avail. The only way to get traffic working again is if I reboot the firewall. Then everything will start working again.
There is no set time that this occurs, it will just randomly happen. Does anyone have an idea while this would start happening out of the blue?
Thank you,
Ben
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