smtp-vilter has been installed as ${PREFIX}/sbin/smtp-vilter.
See smtp-vilter(8) for instructions on how to register the milter.

To start the milter automatically on startup, one can use:

${SYSCONFDIR}/rc.conf.local
  smtp_vilter_flags=""

${SYSCONFDIR}/rc.local
  if [ X"${smtp_vilter_flags}" != X"NO" -a \
      -x ${PREFIX}/sbin/smtp-vilter ]; then
          echo -n ' smtp-vilter'
          ${PREFIX}/sbin/smtp-vilter
  fi
