Hacker News new | ask | show | jobs
by soneil 3888 days ago
I'm not sure I'd put much stock in the linked mail-tester. It has a very incomplete SPF implementation that'll heavily penalise perfectly valid records.

(eg, my record is simply "mx -all". So if a host is listed as an MX for my domain, it's also a valid sender. mail-tester doesn't appear to understand 'a' or 'mx' entries, so fails this entirely.)