California question: In serving court papers to someone in a divorce proceeding, I read online about "substitute service". My brother's situation is that the party being served will not answer the door when she is at home; her 22 year old son answers the door, the server verified that the woman was indeed at home, just not answering the door. The server proceeds to tell the adult son that he has court papers that are very important to give to his mom (the woman being served), please be sure to give them to her. Less than two minutes later, she can be heard by us (outside and around the corner from the home) screaming inside the house. Is this a LEGAL substitute service in California?