I have 2 sets of scripts that send signed e-mail at http://dougbarton.us/PGP/. The "generate challenges" script is probably the easiest to digest. hth, Doug -- It's always a long day; 86400 doesn't fit into a short. Breadth of IT experience, and depth of knowledge in the DNS. Yours for the right price. :) http://SupersetSolutions.com/