This file is indexed.

/etc/qmail/qmail-smtpd/run is in qmail-run 2.0.2+nmu1.

This file is owned by root:root, with mode 0o755.

The actual contents of the file can be viewed below.

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#!/bin/sh

QMAILDUID=`id -u qmaild`
NOFILESGID=`id -g qmaild`
MAXSMTPD=`cat /var/lib/qmail/control/concurrencyincoming`
LOCAL=`head -1 /var/lib/qmail/control/me`

if [ -z "$QMAILDUID" -o -z "$NOFILESGID" -o -z "$MAXSMTPD" -o -z "$LOCAL" ]; then
    echo QMAILDUID, NOFILESGID, MAXSMTPD, or LOCAL is unset in
    echo /var/qmail/supervise/qmail-smtpd/run
    exit 1
fi

if [ ! -f /var/lib/qmail/control/rcpthosts ]; then
    echo "No /var/lib/qmail/control/rcpthosts!"
    echo "Refusing to start SMTP listener because it'll create an open relay"
    exit 1
fi

exec softlimit -m 7000000 \
    tcpserver -v -R -l "$LOCAL" -x /etc/qmail/tcp.smtp.cdb -c "$MAXSMTPD" \
        -u "$QMAILDUID" -g "$NOFILESGID" 0 smtp qmail-smtpd 2>&1