/usr/share/doc/amavisd-new/RELEASE_NOTES.gz is in amavisd-new 1:2.10.1-2~deb8u1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/amavisd-new/changelog.gz
/usr/share/doc/amavisd-new/changelog.gz