La. C.C.P. art. 4703. — Delivery or service when premises abandoned or closed, or whereabouts of tenant or occupant unknown

If the premises are abandoned or closed, or if the whereabouts of the lessee or occupant is unknown, all notices, process, pleadings, and orders required to be delivered or served on the lessee or occupant under this Title may be attached to a door of the premises, and this shall have the same effect as delivery to, or personal service on, the lessee or occupant.