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5.1. Installation

See Section 1, “Postfix” [p. 262] for instructions on installing and configuring Postfix. To install the rest of the applications enter the following from a terminal prompt:

sudo apt install amavisd-new spamassassin clamav-daemon sudo apt install opendkim postfix-policyd-spf-python

There are some optional packages that integrate with Spamassassin for better spam detection:

sudo apt install pyzor razor

Along with the main filtering applications compression utilities are needed to process some email attachments:

sudo apt install arj cabextract cpio lha nomarch pax rar unrar unzip zip

If some packages are not found, check that the multiverse repository is enabled in /etc/apt/ sources.list

If you make changes to the file, be sure to run sudo apt update before trying to install again.

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