Stupid sound question - "DNS Error"

[Gary Baluha]

It sounds like an obvious answer, but what does the http/https monitoring
error "DNS Error" mean, exactly?

Specifically, I have several https checks defined in Hobbit, and a good
number of them get the "DNS Error" message multiple times a day; roughly on
the order of every 1-3 hours.  I have manually verified that DNS is working
for these hosts.  It might help me troubleshoot this if I know exactly how
Hobbit comes to this determination, and if anything else other than DNS
could cause it to appear.
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