仅在缺少缓存文件或复制间隔出现错误时重新设置它。
It is reset only by a missing cache file or replication interval setback.
例如,在用户定义的间隔(如10分钟)过后,每个项都自动从缓存中删除。
For example, every entry is automatically evicted from the cache after some user-defined interval, say 10 minutes.
在以下情况下可能重新设置此设置:故障转移、首选服务器更改、缓存文件不可访问、复制间隔错误,或者在其他任何需要与新的服务器邮件文件进行同步时。
This setting can be reset by failover, preferred server change, unreachable cache file, replication interval setback, or any other time you need to synch with a new server mail file.
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