Just letting people know I've finally caught up on my MaraDNS support emails; a couple of requests for better dangling CNAME handling, of all things. The real solution is this: If you're going to have dangling CNAME records, use a different DNS server for recursive resolving than authoritative resolving (1.3's ability to slice up the recursive space makes these kinds of setups easier).
Welcome to 2008 everyone! One of my resolutions is MaraDNS 2.0, which will not allow the same IP to be both authoritative and recursive, and that will have a completely rewritten recursive resolver.
- Sam