Iowa R. Civ. P. 1.306
Every corporation, individual, personal representative, partnership or association that shall have the necessary minimum contact with the state of Iowa shall be subject to the jurisdiction of the courts of this state, and the courts of this state shall hold such corporation, individual, personal representative, partnership or association amenable to suit in Iowa in every case not contrary to the provisions of the Constitution of the United States.
Service may be made on any such corporation, individual, personal representative, partnership or association as provided in rule 1.305 within or without the state or, if such service cannot be so made, in any manner consistent with due process of law prescribed by order of the court in which the action is brought.
Nothing herein shall limit or affect the right to serve an original notice upon any corporation, individual, personal representative, partnership or association within or without this state in any manner now or hereafter permitted by statute or rule.
Iowa. R. Civ. P. 1.306