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INSTALLATION
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------------
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Installing amavisd-new from Fedora Extras is simple. First, install
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the amavisd-new package:
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yum -y install amavisd-new
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Don't be alarmed at the number of dependencies this installs. This
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package tries to be as full-featured as possible, including many
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optional components for amavisd-new.
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Next, configure amavisd-new to start on boot:
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chkconfig --level 2345 amavisd on
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If you want to use the Clam Antivirus daemon (recommended), set it to
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start on boot as well:
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chkconfig --level 2345 clamd.amavisd on
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When you are ready, start the clamd.amavisd (optional but recommended)
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and amavisd services:
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service clamd.amavisd start
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service amavisd start
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Check /var/log/maillog for startup messages from both daemons.
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The next step is to integrate amavisd with your MTA.
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POSTFIX
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-------
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The simplest method for enabling amavisd-new support in postfix is to
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use the content_filter configuration option to tell postfix to relay
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mail through amavisd-new using SMTP. In this configuration, incoming
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mail passes from postfix to amavisd and back to postfix. (Mail never
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actually leaves the control of postfix however, since amavisd does not
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answer OK until it scans the message and transfers it back to postfix.
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The worst that can happen is a failure at just the right time could
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allow a message to be queued twice.)
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Add the following to /etc/postfix/main.cf:
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content_filter = smtp:[127.0.0.1]:10024
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You will probably also want to limit the number of postfix processes
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to keep mail from coming in faster than it can be processed by adding
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the following to /etc/postfix/main.cf:
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default_process_limit = 20
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Add the following to /etc/postfix/master.cf:
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127.0.0.1:10025 inet n - - - 0 smtpd -o content_filter=
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Be sure to read the TUNING section in README.postfix for information
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on process limits.
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SENDMAIL
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--------
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See README.sendmail* in this directory.
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Please note that amavisd-new's milter functionality is not enabled in
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this package.
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EXIM
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----
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See README.exim* in this directory.
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