DB, MySQL, Oracle, 等等）中，这就使得他们有足够的灵活性利用石板和凿子写存储驱动。
The DSPAM Solution is split up into the following pieces:
DSPAM CORE ENGINE
The DSPAM core engine, also known as libdspam, provides all major spam
filtering functions. The engine is linked to other dspam components (or
shells) to provide functionality. The core engine is capable of being linked
in with any other application as a "drop-in" to provide spam filtering to
mail clients, other anti-spam tools, and other such type projects that
would benefit from its use. Both static and shared versions are built by
libtool into .libs.
libdspam provides a storage driver abstraction layer, enabling developers to
easily change how information is stored on the system (for example Berkeley
DB, MySQL, Oracle, etc.) with enough flexibility to write a storage
driver utilizing stone tablets and chisels.
DSPAM代理
DSPAM代理是为libdspam提供垃圾过滤邮件服务器或其他服务器支持工具的直接接口的shell。代理通常指以 字串1
下两者之一：
1.代理可以化妆成邮件服务器的本地发送代理。然后DSPAM就处理邮件服务器通过管道传来的邮件，接着用
真实发送代理（procmail,mail.local,或通过一代理人把他传到另一个服务器），但若是垃圾邮件就会将
其隔离（DSPAM也可以选择标识并发送垃圾邮件）。
2.作为POP3代理，当用户检查时，DSPAM能被设定可处理电子邮件以及标识垃圾邮件。这就允许DSPAM在没有
综合需求的情况下自动到达任何邮件的前端。
MTA(sendmail,exim,qmail,等等)或POP3代理用参数识别目的地用户和其他操作参数调用DSPAM。DSPAM完成
其内部计算后将基于此结果执行适当的动作。
当邮件发送至终端用户时，代理对每个邮件设置了一系列的数字搜索路径。这些数字代表存储在服务器的临
时信息：包含邮件的原始数据，同时也用于当DSPAM出错时重学原始邮件。这允许DSPAM在不必提供完整邮件
头时精确地获悉————为了终端用户的生活跟方便。
DSPAM AGENT
The DSPAM agent is a shell for libdspam providing a direct interface to
mail servers or other tools for server-side spam filtering. The agent
is normally integrated into one of two places:
字串9
1. The agent can masquerade as a mail server's local delivery agent. DSPAM then
processes email piped to it from the mail server and then either delivers it
using the real delivery agent (procmail, mail.local, or a proxy to pass it
along to another server), or will quarantine it if the message is spam (DSPAM
can optionally tag and deliver spams as well).
2. As a POP3 proxy, DSPAM can be configured to processes email when the user
checks theirs, and tags spam accordingly. This allows DSPAM to front-end
any mail system without the need for integration.
The agent is also responsible for correcting misclassifications (missed spams
or false positives). This is critical to the learning operations of DSPAM.
The MTA (sendmail, exim, qmail, etc) or the POP3 proxy calls DSPAM with
parameters identifying the destination user and other operational parameters.
DSPAM performs its internal calculations and will then perform the appropriate
action based on the result.
字串6
When an email is delivered to the end-user, the agent appends a serial number
to each email. This serial number references temporary information stored on
the server which contains the original training data for the message, and is
used to re-learn the original message in the event DSPAM made a mistake. This
allows DSPAM to accurately learn without having to provide the full headers
of the message - making life much easier for end-users.
CGI CLIENT
CGI客户机是一个是邮件用户看到其隔离箱的终端用户工具，可以倒转偶然的假阳性，看到用户的历史动作，
而且最重要的是可以永久删除垃圾邮件。CGI客户机用来和DSPAM代理联合一致。在一可选择的解决方案中，
比如客户机-过滤/前进，消除隔离箱是必要的，但是很多用户会感激--要是不用下载所有的垃圾邮件的话，
同时也能够查看使用曲线图和其他有用的信息。
工具
提供管理字典，自动化文集，创造种子[合成的]字典。
CGI CLIENT
The CGI client is an end-user tool enabling a mail user to view their
quarantine box, reverse the occasional false positive, view their historical 字串9
activity, and most importantly to delete their spams permanently.
The CGI client works in conjunction with the DSPAM agent. It is possible to
eliminate the quarantine box in lieu of an alternative solution, such as
client-filtering/forwarding, but many users will appreciate not having to
download all of their spam, and being able to view usage graphs and other
useful information.
TOOLS
Some basic tools which have been provided to manage dictionaries, automate
corpus feeding, and create seeded [composite] dictionaries.
1.1 安装
主要步骤
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重要升级步骤： 适用于版本<3 /> ------------------------------------------------------
3.0版本合并了用户接口的许多变化，但是保留了常规的数据结构，因此用户没有必要为了升级再重新学。
步骤1：关闭现有的DSPAM安装。
现有的DSPAM安装必须先于升级前关掉。最简单的方法是关掉为DSPAM CGI服务的MTA和web服务器。在升级时不得处理任何邮件。