/usr/share/maven-repo/javax/mail/gnumail/1.1.2/gnumail-1.1.2.jar is in libgnumail-java 1.1.2-10ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/maven-repo/javax/mail/gnumail/1.1.2/../../../../../java/gnumail-1.1.2.jar