if [ "$shortdist" = "ubu1804" ] || [ "$shortdist" = "ubu2004" ] || [ "$shortdist" = "deb10" ] || [ "$shortdist" = "deb11" ] ; then
    debconf-set-selections <<< "postfix postfix/mailname string $hostname"
    debconf-set-selections <<< "postfix postfix/main_mailer_type string 'Internet Site'"
fi