Whitelist and blacklist features let you identify email that should be immediately delivered or deleted.
特别提供的黑名单和白名单功能让你能够鉴别应该被传递或者删除的电子邮件。
A real world example of a whitelist would be if two companies wanted to exchange email only with each other.
一个真正的世界来说是一个误传如果两家公司只想要彼此交换电子邮件。
That would mean that any email coming from an IP address not on the whitelist would be returned to sender.
那就意味着任何电子邮件来自一个IP地址不是会退回给寄件人的误传。
These companies could implement a whitelist that contained the IP address for just the two email servers that want to send email to each other.
这些公司可以实施误传的IP地址，只包含两个电子邮件伺服器，希望送电子邮件给对方。
These companies could implement a whitelist that contained the IP address for just the two email servers that want to send email to each other.
这些公司可以实施误传的IP地址，只包含两个电子邮件伺服器，希望送电子邮件给对方。
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