Why is MaraDNS public domain instead of BSD or GPL licensed?
The post-1.0.xx releases of MaraDNS are, in fact, under a simple BSD license (without any “obnoxious” advertising clause). I used a public domain (non-)license so that MaraDNS could be integrated with Python without trouble. While Python is, I believe, currently GPL compatible, Python was not GPL-compatible at the time I decided on a license for MaraDNS.