Read this yesterday: http://www.theregister.co.uk/2005/10/24/dns_security_survey/ It got me wondering aobut the default DNS conf in Plesk. I know from logs, that it refuses zone transfers. I understand the concept that recursion can be a vuln, but I don't know how to check this. Also wondering if it's set to respond only to requests for domains on the server. Anyone know? Or better yet, can anyone show (or tell) me how to determine this?