From what you describe, I think I know the type of setup you have: there is a coach light (or similar) next to your door and you have the switch inside your unit. This light next to your door supplements lighting in an external, communal walkway.
That external walkway would have its own lighting and is probably roof mounted – it would be completely unsafe if individual unit owners had to light the common area – these roof mounted ‘common lights’ would be controlled centrally.
Therefore, the door light and the globe is your responsibility.