I filed a petition for special relief and received an order of Rule returnable by a certain date. I immediately mailed a copy of the rule and petition to my unrepresented opposing party. If there is no response how do i file a motion to make the rule absolute? I can find no sample on line. In addition rule 440 states that service can be via USPS mail and service is considered complete upon mailing. However all mail I have sent in the past comes back refused. What happens if the petition and Rule come back refused?