about server failure cache

[liuqiang]

hi,
   A recursive name  server A  receives a recursive query from a client,but the authoritative name server B for the query zone is dead. So name server A return a server failure answer to the client.
   I want to konw if name  server A send a query to name server B when another client ask the same domain of the zone.
   In other words my question is if the name server cache  server failure infomation.
 
Best Regards,
 liuqiang
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