primary dns zones on DNS servers at a few of our customers ISP's. So basically take a list of a ~6 open, recursive, DNS servers. Do a lookup against them and verify the answer against the known good answer. And do this once every (TTL). With the current security issues I'm sure someone has already written better code that I'm going to come up with in the next hour. Anybody want to share?
David A. Evans Enterprise IP/DNS Management Network Infrastructure Tools and Services [EMAIL PROTECTED] Eschew Obfuscation
