michele neylon blacknight ishsapkblacknightie colm buckley wrote 11807 rick moen wrote specifically provides way detect reject joejob mail forgeries furnishing authoritative publiclycheckable roster domains valid mxes well mxes usually means mail destinations domain domains mx records spf publishes record mail sources domain technically mail exchange servers wouldnt usually refer mxes neither would usually refer sources course people seem get confused terminology calling mxes probably relatively sane even though inaccurate mr michele neylon blacknight solutions hosting colocation brand protection httpwwwblacknightcom httpblogblacknightcom intl 353 0 59 9183072 locall 1850 929 929 direct dial 353 059 9183090 fax 353 0 1 4811 763 blacknight internet solutions ltd unit 12abarrowside business parksleaty roadgraiguecullencarlowireland company 370845 thu 07 aug 2008 203922 0000 ilug advice antispam strategyblocking software