Mississippi Code Title 93. Domestic Relations § 93-11-67

(1) In an action for child support, a court may exercise personal jurisdiction over and enter a judgment in personam against a defendant if personal service of process is made as provided below and if the parties had resided in a marital relationship with each other in this state for thirty (30) days and if the complainant has continuously resided in this state after the defendant has become a nonresident.

(2) The defendant shall be personally served with a summons and a copy of the petition in the manner prescribed by the law of the state or jurisdiction in which service is made or by any form of mail addressed to the defendant with a receipt showing personal delivery or by personal service outside this state or jurisdiction in the manner prescribed for service within this state.

(3) Proof of service outside this state or jurisdiction may be by affidavit of the individual who made service or in the manner prescribed by the law of this state or in the manner prescribed by the law of the state or jurisdiction in which service is made. If service is by mail, proof may be a receipt signed by the defendant or other evidence of personal delivery to the defendant.