Symptoms
When the first DNS resolver is invalid, Bot Defense is unable to verify trusted bots, and is classifying them as malicious bots.
Impact
Bot Defense wrongly classifies valid search engines as malicious bots (and might block them if enforcement is enabled).
Conditions
-- First DNS resolver in the list is invalid.
-- Bot Defense profile is attached to a virtual server.
-- Request from a search engine arrives.
Workaround
Fix the first DNS resolver in the list.
It's possible that the first DNS resolver is the built in DNS resolver "f5-aws-dns".
