Iowa Code § 359A.7: Service of notice on nonresidents.

The notice by the fence viewers provided for in this chapter may be served upon any owner nonresident of the county where the land is situated, by publication thereof, once each week, for two consecutive weeks in a newspaper printed in the county in which the land is situated, proof of which shall be made as in case of an original notice and filed with the fence viewers, and a copy delivered to the occupant of said land, or to any agent of the owner in charge of the same.