I've a Ubuntu 10.04 package from Godaddy, It includes BIND and Sendmail pre-installed.
Normally recursion enabled for Internal DNS queries and recursion is disabled for External DNS queries. (Please correct me if I'm wrong here)
But I found that my server has both Internal and External recursion turned on.
Is there any chance that Sendmail program can turn on External recursion?
Or any other (very common) program can turn the recursion on?