michele neylon blacknight ishsapkblacknightie kieran osullivan wrote looking advice antispam strategy looked spam blockers read spamassassin seems prity good however managing webmaster info account come conclusin kind email verification method best forcing rest world work simply wrong challenge response mechanisms wrong many levels seen good email verification system years ago emailed address challenged email reply replied put safe list never got challenged broke email system process want filter email plenty sane solutions challenge response isnt one 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 185701 0000 ilug advice antispam strategyblocking software