On Mon, Sep 15, 2014 at 10:24 PM, Wietse Venema <wie...@porcupine.org> wrote: > When you follow the include: directives you get lists of net/mask > forms that are easy to convert to postscreen. > > $ host -t txt spf1.amazon.com | tr ' ' '\12' | sed -n '/^ip.:/{ > s/^ip.:\(.*\)/\1 permit/ > p > }' | sort -u > > I thought there would be a nice script that converts SPF net/mask > lists to postscreen access lists but I could not quickly find one. > I also searched and found none.
Usually I use https://dmarcian.com/spf-survey/amazon.com ( see last section : Record flattening ) for manual lookups. It's also nice because it shows record errors and warning like invalid ( or not so valid ) CIDR blocks or too many DNS lookups ( https://dmarcian.com/spf-survey/tam.com.br ) José Borges Ferreira