Answer: The spots can be sunscald (especially if it is subjected to hot afternoon sunshine) or they could indicate a fungal or bacterial disease. I'd prune off the affected leaves to encourage healthy new growth. Double check, too, for the kind of sun exposure your plant is getting. It will grow best in bright shade but can take some morning sun. Maybe all you'll need to do is move it from one side of the porch to the other. Best wishes with your aucuba!
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