An SPF client program performs a query searching for the correct SPF record, in order to determine whether a message comes from an authorized source.

SPF客户机程序执行一个查询寻找正确的SPF记录，为了确定一个消息来自一个授权的来源。

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An SPF client program performs a query searching for the correct SPF record, in order to determine whether a message comes from an authorized source.

SPF客户机程序执行一个查询寻找正确的SPF记录，为了确定一个消息来自一个授权的来源。

youdao