Dynamic File Services only detects file via extensions, rather then data type, e.g I have a policy which moves 'audio' and 'video' files to Secondary storage, the policy works only if files have proper extension, but if I rename songs.mp3 to songs.txt, policy wont work, i.e policy wont be able to move 'songs.txt' to Secondary path.

am I missing something, or the Dynamic File Services can only work with file extensions ?