Had similar problem, solved it by setting up 2 Red Hat 9 boxes as primary and secondary dns in the same domain as the main host mail/web server SME of course. RH9 DNS Manger is an absolute breeze to use with its new graphical interface. By the way have found Network Solutions and their Domain Manager interface a real pain, worth checking out Register.com theirs is easier to use and they respond much quicker to support issues.