Router cache - The request continues on to your router, which typically has its own DNS cache.

路由器缓存—接着，前面的查询请求发向路由器，它一般会有自己的DNS缓存。

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RouterDbCacheSize Specifies the size of the router database cache used to cache mail databases in the router process.

RouterDbCacheSize指定用于在路由器进程中缓存邮件数据库的路由器数据库缓存的大小。

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RouterDbCacheSize Specifies the size of router database cache used to cache mail databases in the router process.

RouterDbCacheSize指定路由器数据库缓存的大小，用于在路由器进程中缓存邮件数据库。

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