post office policies

[low_delta]

If you walk into the post office and say, "I have the old address of this guy, and he has his mail forwarded to his new address. Can you tell me his new address?" they will say, "no, I'm sorry that is a violation of our privacy policies." But if you mail a letter to the person at his old address, and write "return service requested" on the envelope, it will be returned to you with the new address written on it.

So basically, you have to pay 37 cents and wait a day.