I think that's a mistake. You are using abandoned software: djbdns 1.05 was released in 2001. It even has a published security flaw from 2009, for which the $1000 guarantee was paid by DJB, and yet there is still no official release to fix the issue (there is a patch available from other sources).
There is a fairly healthy ecosystem of BIND alternatives these days, but djbdns is not one of them.
This one? http://article.gmane.org/gmane.network.djbdns/13864 It is a little disappointing he didn't issue a new release with the patch included. Perhaps it can be rationalized that the original fork is abandoned, but distro-maintained forks are fine.
As someone who runs tinydns to serve a few personal domains, I'd be interested to hear of another simple, solid option, if it fixes any concrete problems a recent Ubuntu build of tinydns has.
There is a fairly healthy ecosystem of BIND alternatives these days, but djbdns is not one of them.