Looks like it's receiving instruction to delete an ip/fqdn that doesn't exist?
2021-07-28 12:57:48 fqdnd [IPSET] Problem on deleting x.x.x.x, ret -4103, Element cannot be deleted from the set: it's not added Debug
For the record, what Fireware version are you running?????
oh yeah! its 12.6.2. T40
If it's FQDND (the process that runs FQDN resolution for policies) it's probably something that was removed and then tried to expire out afterwards. Logging might be turned up higher than error if you're seeing those messages.
If your FQDN policies are working without issue, it's likely just log noise. If it's something you'd like to be looked into, I'd suggest opening a support case so that we can look more deeply into why it's occurring.
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