Until the builds are published to Maven Central, you may need to download the dnsjnio-x.x.x.jar from the project, and install it in your local Maven repository. This can be accomplished by using the following command where the -Dfile= location is the path to the jar file to install.
mvn install:install-file -Dfile=dnsjnio-1.0.5.jar -DgroupId=uk.nominet \
-DartifactId=dnsjnio -Dversion=1.0.5 -Dpackaging=jar