What happens if a motion filed in a case is returned to sender?

I filed a motion for the dissolution of a stay-away. I sent it via USPS certified mail, with an electronic return reciept. They attempted to deliver the mail and left a note that the petitioner should go to the office to pick it up, I was wondering what happensif he doesn't pick it up and what if the mail is then returned to me. Would I as the respondent get in trouble for not notifying him? Is there a way for me to have an officer give him the motion so that I was no longer responsible? - Is this your question? Add additional information