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Forum Moderators: bakedjake
If yes, the AA bit is always set on NXDOMAIN responses, even if the server is not actually authoritative. The default is yes. Do not turn off auth-nxdomain unless you are sure you know what you are doing, as some older software won't like it.
NX-DOMAIN means "domain doesn't exist" The AA bit means the server has authority.
So, just leave it alone ;)