Told to shut down because Red Fort is not at a safe distance (3,5,3,7)

I believe the answer is:

too close for comfort

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'told to shut down because red fort is not at a safe distance' is the definition.
I don't know anything about this answer so I can't tell whether this works.

'told to shut down because red fort' is the wordplay.
'told' indicates a 'sounds like' (homophone) clue.
'shut down' becomes 'close' (synonyms).
'because' becomes 'for' (I've seen this before).
'red fort' becomes 'comfort' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'to' sounds like 'too'.
'too'+'close'+'for'+'comfort'='TOO CLOSE FOR COMFORT'

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I've seen this clue in the Sydney Morning Herald.

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