http://spf.pobox.com/blog.html
http://spf.pobox.com/Mail-SPF-Query-1.7pre1.tar.gz
prerequisites:
Net::DNS
Net::CIDR::Lite
URI::Escape
time perl -MMail::SPF::Query -le 'my $query =
Mail::SPF::Query->new(ipv4=>shift, helo=>shift, sender=>shift, debug=>0); print
"result: $_" for $query->result; print "best guess: $_" for $query->best_guess'
208.210.124.181 98.spf1-test.mailzone.com
user(_at_)98(_dot_)spf1-test(_dot_)mailzone(_dot_)com
please experiment.
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