I need to serve CalPERS with a Civil Subpoena (DUCES TECUM ) just for documents on how much my ex has and is receiving in his retirement. He hasn't paid or offered to pay child support for 8 months and is in arrears for perm spousal s. Looking at the forms it looks like you have to hand deliver. I would like to just send it certified mail. Is that acceptable? I need to serve CalPERS with a Civil Subpoena (DUCES TECUM ) just for documents on how much my ex has and is receiving in his retirement. He hasn't paid or offered to pay child support for 8 months and is in arrears for perm spousal s. Looking at the forms it looks like you have to hand deliver. I have a person who can serve the papers but I would like to just send it certified mail. Is that acceptable?