I have uploaded a new snapshot of MaraDNS today. This snapshot properly handles NXDOMAIN replies, and should handle truncation properly. In addition, it supports writing the cache to a file, and reading the cache from said file, and the user-id and group-id Deadwood-2 run as are now configurable in the dood2rc file. It is available here.
In addition, Sarton has made his own 1.3 release of MaraDNS, which is available here.