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sutch
Asked: 2010-05-21 17:43:42 +0800 CST

Automate the installation of postfix on Ubuntu

  • 772

My system configuration script does an "apt-get install -y postfix". Unfortunately the script is halted when the postfix installer displays a configuration screen. Is there a method to force postfix to use the defaults during installation so that an automated script can continue to the end?

Does the postfix installer maybe check for existing configuration in /etc/postfix, and if it exists, not bother the user with the configuration screen?

ubuntu installation postfix apt automation

3 Answers

  1. Best Answer

    You can use pre-seeding for this, using the debconf-set-selections command to pre-answer the questions asked by debconf before installing the package.

    For example:

    debconf-set-selections <<< "postfix postfix/mailname string your.hostname.com"
debconf-set-selections <<< "postfix postfix/main_mailer_type string 'Internet Site'"
apt-get install --assume-yes postfix
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  2. If you want this globally:

    dpkg-reconfigure debconf

    Then configure it to be "noninteractive"

    If you just want it for single install run:

    DEBIAN_FRONTEND=noninteractive apt-get install PACKAGE
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  3. echo "postfix postfix/mailname string example.com" | debconf-set-selections
echo "postfix postfix/main_mailer_type string 'Internet Site'" | debconf-set-selections
apt install -y postfix
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