The software installation and configuration have been divided into two sections. The first section
covers the installation of Exim and Courier. The second section covers the installation of ClamAV
and SpamAssassin and configuring Exim to use them to filter incoming mail.
NOTE
NOTE
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Running a Mail Server 25
Installing Exim and Courier
Installing and configuring Exim and Courier are very straightforward thanks to the quality of the
packages that come with Debian. Chances are, if you have a new Debian system, it already has a
version of Exim installed. However, you??™ll want to use a specific version of Exim that contains
features for content scanning. Here are the installation steps:
1. Start by installing this particular Exim package:
# apt-get install exim4-daemon-heavy
2. You need to change a few of the configuration options from the defaults. Run the following
command:
# dpkg-reconfigure --priority=medium exim4-config
You are asked a number of questions. Here's how to answer them:
Split configuration into small files: Yes.
General type: Select ???Mail sent by smarthost; received via SMTP or fetchmail??? if you
need to send all of your outgoing mail through a server at your Internet service provider.
Otherwise, select ???Internet site; mail is sent and received directly using SMTP.
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