To use the capability effectively for monitoring system status, E-mail messages, and any other desired parameter, we need to preserve this variability while providing a simple interface for its usage.

要有效地使用该能力监视系统状态、电子邮件和任何其他需要的参数，我们需要保留这种可变性，同时为其使用提供一个简单的接口。

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One of the more extensive (and possibly controversial) methods for monitoring your mail usage is to look at how individual users are using and examining their E-mail.

一种更广泛使用的、监视邮件使用情况的方法(并且可能存在争议)是，查看每个用户如何使用邮件，并分析他们的电子邮件。

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It may come from an automated proactive monitoring tool, or sometimes the less-desirable variety, which is an E-mail or phone call from your customer stating, "the site is down."

这条通知可能来自一个自动的主动监视工具，有时甚至是您不愿意看到的形式，比如来自客户的电子邮件或电话，表示“网站停止运行。”

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Corporate computers are fair game for snooping in the U.S. (Some European countries have stricter privacy rules.) So in-house spooks can divert copies of incoming and outgoing e-mail to a separate file for monitoring.

FORBES: Get Hunt and Liddy on the Phone

The system, called key-escrow, would give police and other law enforcement bodies wide-ranging powers to intercept e-mail, read confidential documents and tap into systems, without monitoring by the courts.

BBC: Security and law enforcement: the government view

Such monitoring is increasingly useful, because of the growing use of e-mail, faxes and the Internet by businesses to communicate.

ECONOMIST: Those perfidious Anglo spies