Spam Filters垃圾邮件过滤器
By Andrew Symonds由郑家富西蒙兹
Though previously not acknowledged as a serious threat, spamming has now reached about 60% to 70% of all e-mail traffic all over the world.虽然以前不承认是一个严重的威胁，垃圾邮件现在已达到约60 ％至70 ％的所有电子邮件流量遍布世界各地。 Different institutions and organizations, including government agencies, recognize the threat spam brings with it.不同的机构和组织，包括政府机构，认识到垃圾邮件的威胁，带来了它。 Thus anti-spamming efforts have been on the rise in the past years.因而反滥发的努力一直在不断上升，在过去几年。

Spam software is one of the most commonly employed tools against spam.垃圾邮件的软件是一个最常用的工具，对垃圾邮件。 There are many available spam software in the market today.有许多可用的垃圾邮件软件，在当今市场上。 They make use of a variety of methods and techniques.他们利用各种方法和技术。 In choosing the right spam software for your company, you should at least know the concept behind them.在选择正确的垃圾邮件软件，为您的公司，你至少应当知道背后的理念。 This will help you choose the most suitable spam software to meet your needs.这将帮助您选择最合适的垃圾邮件软件，以满足您的需要。

Spam software usually makes use of spam filters.垃圾邮件软件通常使用的垃圾邮件过滤器。 A spam filter basically identifies specific items – keywords or IP addresses for example – that are either allowed to go through or are blocked.垃圾邮件过滤基本上确定了具体项目-关键词或I P地址，例如-即要么允许通过或正在受阻。 One technique that some spam software make use of is the RBL or Real Time Black Hole List.其中一项技术，有些垃圾邮件软件使用，是乡或实时黑洞名单。 In this method, the spam filter takes note of IP addresses, which are known to send spam.在此方法中，垃圾邮件过滤器需注意的IP地址，这是众所周知的发送垃圾邮件。 All communication from these IP addresses is then blocked.所有的沟通，从这些IP地址，然后将受阻。

Another technique used by spam software is keyword based filtering.另一种技术所使用的垃圾邮件软件，是基于关键字的过滤。

In this method, the spam software is configured by the user by inputting specific keywords and key phrases, which are to be banned.在此方法中，垃圾邮件的软件配置由用户输入特定的关键词和关键短语，这是被禁止的。 All communication with these keywords and phrases are then blocked by the spam filter.所有的沟通与这些关键词和短语，然后阻断了垃圾邮件过滤器。

Other spam software makes use of permission-based filtering.其他垃圾邮件软件使用许可为基础的过滤。 E-mail addresses are supposed to be authorized, otherwise they are blocked.电子邮件地址是为了获得认可，否则他们会受阻。 Spam filters, which are permission-based, also make use of tags embedded in the e-mails to determine whether to give authorization or not.垃圾邮件过滤器，这是权限为基础，同时利用标签嵌入在电子邮件，以决定是否给予批准与否。 The absence of these tags would then prompt the spam filter to block the e-mail.如果没有这些标签，将促使其垃圾邮件过滤器来阻止电子邮件。

Another technique used by spam software is concept-based filtering.另一种技术所使用的垃圾邮件软件，是基于概念的过滤。 This method scans the text and detects its concept.这种方法扫描文本并检测其概念。 If the concept does not meet the requirements of the spam filter, the e-mail is then blocked.如果这个概念不符合要求的垃圾邮件过滤器，电子邮件，然后堵住了。

These are some of the most commonly used techniques in combating spam through spam software.这些都是一些最常用的技术，在打击垃圾邮件通过垃圾邮件软件。 Determine which method would suit your needs best.确定哪一种方法，将满足您的要求，最好的。 Then you can look into different spam software that you can use.然后你可以看看不同的垃圾邮件软件，你可以使用。

Need to know more about Spam Filters需要了解更多有关垃圾邮件过滤器

Here are some more anti spam articles...这里有一些更多的反滥发文章...