I updated a customer XG to 16.05.7 last week. A few days later the UI started reporting error 500 every time I tried to access it, and then the proxy stopped working. Rebooting both nodes (A/P HA) got that working again, but since then inbound email hasn't been working. Inbound email is done via a DNAT rule to an internal Exchange server (FQDN host).
The firewall drops packets with reason 02002 (nfi what that is), but if I hover over the host definition for the exchange server, it says "Unable to resolve IP address for this FQDN". If I open the FQDN host and click save, it then resolves and the rule starts working again.
Is this a known bug?
Thanks
James
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