关于这些限制，并没有很简单的解决方法，但是通过使用电子邮件的自动处理、并更新您的列表，您可以提高白名单和黑名单的质量。
There is no simple way round these limitations, but you can work to improve the quality of your whitelists and blacklists by using auto-processing of your e-mails and updating of your lists.
白名单中包含您所信任的电子邮件地址，而黑名单中则包含您不信任的电子邮件地址。
The whitelist contains e-mail addresses you trust, while the blacklists contains e-mails you don't trust.
在计算机应用领域，建立白名单其实就是将认为非垃圾、无病毒的姓名、电子邮件地址、网址、或者程序等信息添加入允许列表。
In computer usage, to whitelist means to place a name, E-mail address, Web site address, or program on a list of items that are deemed spam - or virus-free.
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