此服务器上必须至少存在一个邮箱存储，才能添加站点复制服务。

You must have at least one mailbox store on this server before a Site Replication Service can be added.

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每个存储组最多可以有五个存储，这五个存储都可以用作邮箱存储。

There can be up to five stores per storage group, and any number of the five stores may be mailbox stores.

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例如，邮件阅读应用程序可能会尝试确定本地系统是如何存储邮箱的，并包含对该格式的支持。

For example, a mail reader application might attempt to determine how the local system stores mailboxes and include support for the format.

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