那么您或许希望删除untrusted.mail_args文件。如果没有发现文件，dspam将允许用户向预先配置了的LSA
（和一些合乎情理的核实要素）指定自己的通过参数，如果不正确的安装这会产生潜在的不安全因素。为了
忽略用户参数，强烈推荐您使用此文件。
不能打开untrusted.mailer_args文件时DSPAM会警告您（通过日志纪录）。
如果您不想看见这个警告的话，去建一个空的untrusted.mailer_args文件吧。
NOTE: In the event that ALL of the following are true:
- Your MTA performs a setuid() to the destination user prior to calling
DSPAM
- There are additional _dynamically assigned_ parameters that must be
passed to DSPAM which cannot be specified in configuration
- The delivery agent has no potentially dangerous commandline
options, or you are placing a wrapper around the delivery
agent
Then you may want to remove the untrusted.mailer_args file all together.
If the file cannot be found, dspam will permit the user to specify their
own passthru arguments to the preconfigured LDA (with some basic sanity
字串9
checking) which COULD POTENTIALLY BE INSECURE if improperly set up.. It
is strongly recommended you use this file to override the user.
DSPAM warns you (over log record) when unable to open
untrusted.mailer_args file.
If you don't want to see this warning then make untrusted.mailer_args
file exists but empty.
4. 配置服务器
有两种配置DSPAM的方法：
Mail Server: 当邮件来到时，使DSPAM直接和邮件服务器以及垃圾过滤器结合成整体的默认方式。
POP3 可选择的实现POP3的方法，用户连接到该代理为了检查他们的邮件，当下载完以后邮件就被过滤。POP3方法
比较简单，因为它和邮件服务器之间不需要配置太多的参数（同时也是在Exchange等实现DSPAM的理想工具）。
最大的区别在于前者（邮件服务器）在MTA时间过滤邮件，而后者（POP3代理）在MUA时间处理邮件过滤，而
且后者还有额外的好处：不必担心虚拟用户等等。
4. SERVER CONFIGURATION
There are two ways DSPAM can be configured:
Mail Server: The default approach integrates DSPAM directly with the mail
server and filters spam as mail comes in. 字串9
POP3 Proxy: The alternative approach implements a POP3 proxy where users
connect to the proxy to check their email, and email is filtered when
being downloaded. The POP3 proxy is a much easier approach, as it
requires much less integration work with the mail server (and is ideal
for implementing DSPAM on Exchange, etcetera).
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