messages in their corpus)
然而这种training的方式也有争议。所有的论点都是围绕着一个假设：将来这种training的方式很可能导致
您不止一次的接收同一个（或是非常相似的）邮件。
- 既然邮件被重复retrain,那么学习曲线将只基于某一封邮件而不是基于包含不同内容的相似邮件群。
- 很有可能某个用户会重复train一个只收到过一次的垃圾邮件，但是这将会潜在的增加假阳性的风险。
- 如果用户的正常邮件与引进被重复训练的垃圾邮件之间的字典标记非常雷同的话，会使用户潜意识的终止用
垃圾邮件retraining,接着终止用假阳性retraining,然后再终止用垃圾邮件retraining。
尽管有这些争议，但是这种training的方法在许多应用中取得里极大的成功。
This method of training has its controversial points as well. All of these
issues revolve around the assumption this approach to training makes that
you are likely to receive the same (or very similar) again one or more times
in the future.
- Since the message is being retrained repeatedly, the learning curve is
going to be based solely on that one message rather than the natural flow
字串2
of similar messages that may contain slightly different text.
- It's possible a user may agressively train a spam they will only receive
once but could potentially increase their risk of false positives by
training this agressively.
- If there is a significant overlap of dictionary tokens between a user's
regular mail and the incoming spams being agressively trained, the user
could potentially end up retraining with spam, then retraining with
false positives, then retraining with spam again.
In spite of these controversial points, this approach to training has had
successful results with several implementations.
驱动程序细节配置开关（DRIVER SPECIFIC CONFIGURE SWITCHES）
DRIVER SPECIFIC CONFIGURE SWITCHES
libdb4_drv:
--with-db4-includes=DIR
Specify a path to the Berkeley db4 includes
--with-db4-libraries=DIR
Specify a path to the Berkeley db4 libraries
libdb3_drv:
--with-db3-includes=DIR
Specify a path to the Berkeley db3 includes 字串9
--with-db3-libraries=DIR
Specify a path to the Berkeley db3 libraries
(Currently links to -ldb3, to you may need to symlink libdb-3.3.so to
libdb3.so if it doesn't exist)
mysql_drv:
--with-mysql-includes=DIR
Specify a path to the MySQL includes
--with-mysql-libraries=DIR
Specify a path to the MySQL libraries
(Currently links to -lmysqlclient, also -lcrypto on some systems)
--enable-virtual-users
Tells DSPAM to create virtual user ids. Use this if your users don't
actually exist on the system (e.g. in /etc/passwd if using a password file)
NOTE: Please see the file tools.mysql_drv/README for more information
about configuring the mysql_drv storage driver.
pgsql_drv:
--with-pgsql-includes=DIR
Specify a path to the PgSQL includes
--with-pgsql-libraries=DIR
Specify a path to the PgSQL libraries
(Currently links to -lpq, and netlibs on some systems)
--enable-virtual-users
Tells DSPAM to create virtual user ids. Use this if your users don't 字串9
actually exist on the system (e.g. in /etc/passwd if using a password file)
NOTE: Please see the file tools.pgsql_drv/README for more information
about configuring the pgsql_drv storage driver.
ora_drv:
--with-oracle-home=DIR
Specify the Oracle Home (or client home)
--enable-virtual-users
Tells DSPAM to create virtual user ids. Use this if your users don't
actually exist on the system (e.g. in /etc/passwd if using a password file)
NOTE: Please see the file tools.ora_drv/README for more information
about configuring the ora_drv storage driver.
2. BUILDING AND INSTALLING
After you have run configure with the correct options, build and install
DSPAM by performing:
make && make install
If you are a developer wanting to link to the core engine of dspam,
libdspam will be built during this process. Please see the
example.c file for examples of how to link to and use libdspam. Static
and dynamic libraries are built in the .libs directory. Needed headers 字串7
will be installed in $prefix$/include/dspam.
3. 权限
安装后，DSPAM_HOME会自动生成（默认路径是/var/dspam）。确保您的MTA 和CGI 用户在这个路径上有写入的权限。
或许您需要在/etc/group下的the directory's [mail] group中添加root 和MTA用户。MTA用户通常是
'daemon' 或 'smmsp'，尽管在FreeBSD中默认为'mailnull'。这一点很重要，因为您的MTA用户需要
和文件打交道。
非常重要！！！（IMPORTANT!!!）
FreeBSD的mail.local更改了其有效的uid，因此，为了使它在命令行真正地起作用，dspam必须作为setuid root安装。这在安装过程中自动完成。
如果您发现DSPAM正在错误地为某个用户处理所有的操作，可能是那个用户作为一个administrative user已被加入到trusted.users中。
3. PERMISSIONS
After install, the DSPAM_HOME will have been created for you automatically
(the default is /var/dspam). Insure the permissions of the directory
are writable by both your MTA and CGI user.