306.30  Service of notice.
  Owners, occupants, and mortgagees of record who are residents of the county shall be personally served in the manner in which and for the time original notices in the district court are required to be served.
  Owners and mortgagees of record who do not reside in the county and owners and mortgagees of record who do reside in the county when the officer returns that they cannot be found in the county, shall be served by publishing the notice as provided in section 331.305 and also by mailing by certified mail a copy of the notice to the owner and mortgagee of record addressed to the owner’s and mortgagee of record’s last known address, and the county auditor shall furnish to the board of supervisors the county auditor’s affidavit that the notice has been sent, which affidavit shall be conclusive evidence of the mailing of the notice.
  Personal service outside the county but within the state shall take the place of service by publication.
  No service need be had on one who has exercised the right to select an appraiser.
[SS15, §1527-r2, -r3; C24, 27, 31, 35, 39, §4612; C46, 50, §306.53; C54, 58, 62, 66, §306.24; C71, 73, 75, 77, 79, 81, §306.30]
87 Acts, ch 43, §7

Time and manner of service, R.C.P. 1.302 – 1.315