dar...@chaosreigns.com wrote: > If everyone uses SPF, all we need to block all spam is these rules > (SPF_NOT_PASS alone should do it), and a blacklist of domains that have > SPF records including IPs that send spam.
You might also want to read this: http://homepages.tesco.net/J.deBoynePollard/FGA/smtp-spf-is-harmful.html Whilst I don't agree with all the points on here, at least some of them are quite significant. The chance of getting everyone to use SPF is almost nil and I wouldn't be surprised if some mail server admins are refusing to add even trivial SPF records on principle. Francis
