Section 342 requires that all creditors receive notice of the bankruptcy in order for the full restraining action of the automatic stay to become effective. The debtor is to list all addresses provided by the creditor within the 90 days before the bankruptcy was filed, and/or any other address used by the creditor in another bankruptcy. Section 342(c) Again, this is new law and I would not advise the creditor to ignore any notice, written or otherwise. Once the creditor receives notice of the bankruptcy they must cease all attempts to contact the debtor or seize property, without obtain permission from the bankruptcy Court. There are monetary penalty for ignoring this prohibition. Section 343(g) and 362(k).