> The following is "concept"; I don't have the script yet ready, but > it'll be easy to write with your favorite scripting language: > > ------- > 1. get your remote sender's current SPF record: > > dig yourremotesender.com txt > tempfile > > 2. parse the result in tempfile with regex: > > /.*?ANSWER\sSECTION:.*?yourremotesender\.com*.\s+?\d+?\s+?IN\s+?TXT\s+?"v=spf1\s+?([^)]+?)\s+?.all"/ <snip>
The implementation seems a little fragile, but the concept should be workable. On dig (at least the versions I've used), you can use +short for parseable output. Example: dig +short example.com TXT | grep 'v=spf1' | egrep -o 'ip4:[0-9./]+' | sed 's/^ip4://' | sed 's/$/ OK/' > tempfile Something like that, anyway.
