Block DNS Zone Transfers by default

I found in my messages log that a russian spammer did a AXFR of one of my DNS zones. I am a newbie and did not know what that was. In researching I see that that could be bad :)

I have since set allow-transfer {"none";}; since at this point I don't have a slave set up yet.

Maybe to help newbies like me from leaving that open it would be prudent to set the defalt to none during install. That way it is blocked until someone manually adds a slave IP.

Here is the thread:
http://www.virtualmin.com/forums/general-discussion/re%3aaxfr-and-bind.h...