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Clam

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    ClamAV® is an open source antivirus engine for detecting trojans, viruses, malware & other malicious threats.

    Using ClamAV with a mail server... on a Debian System... is fairly simplistic to set up.

    First: install these packages...

    Name Description
    clamav anti-virus utility for Unix - command-line interface
    clamav-base anti-virus utility for Unix - base package
    clamav-daemon anti-virus utility for Unix - scanner daemon
    clamav-freshclam anti-virus utility for Unix - virus database update utility
    clamdscan anti-virus utility for Unix - scanner client
    clamsmtp virus-scanning SMTP proxy

    Then add the appropriate lines to your MTA configuration file(s). In exim it would look something like this...

    av_scanner= clamd:/var/run/clamav/clamd.ctl
    spamd_address= 127.0.0.1 783

    These are the defaults... if you are running clamav on another server substitute the local host/port for the ip/port of that server.

    CREATED 2020-12-31 11:29:37.0

    010-00-04-D0

    UPDATED 2020-12-31 11:29:48.0

    Config Parameters


    Clam AV configuration file is /etc/clamav/clamd.conf

    PhishingSignatures - checks url signatures against known phishing sites

    PhishingScanURLs - cal cause artificial rejections or false positives if the href in the URL does not match the element data. For example:

    <a href="paypal.badGuy.com"/>paypal.com</a>

    However, this option sometimes causes valid mail to be rejected.

    CREATED 2020-12-31 11:29:51.0

    010-00-04-D1

    UPDATED 2020-12-31 11:30:02.0

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