Tennessee Code Title 67. Taxes and Licenses § 67-5-2415

(a) The court shall have jurisdiction to award personal judgment against an owner upon the claim for the debt upon determining that proper process has been served upon such owner. The court shall have jurisdiction to award a judgment enforcing the lien by a sale of the parcel upon determining that any the following actions have occurred as to each owner:

(b) Notice shall also be sufficient if received by an owner in time to afford the owner a reasonable period to prevent the loss of owner's interest in the parcel. Such loss shall be deemed to occur upon the expiration or termination of the redemption period established by part 27 of this chapter.

(c) Notice of the pendency of the proceedings as to a parcel constitutes notice of the pending sale of the parcel and vice versa.

(d) If process is to be served upon a defendant, the defendant does not have to receive a copy of the complaint or exhibits. The plaintiff may in lieu thereof furnish to the defendant a notice identifying the proceedings sufficiently for the defendant to determine the parcel which is subject to the delinquent taxes for which the defendant is being sued.

(e) A defendant may file a pleading alleging specific facts establishing any of the following defenses:

(f) Process may be served either by an authorized process server or forwarded by certified or registered mail, return receipt requested, or by any alternative delivery service as authorized by Section 7502 of the Internal Revenue Code (26 U.S.C. § 7502).

(g) The return of the receipt signed by the defendant, spouse, or other person deemed appropriate to receive summons or notice as provided for in the Rules of Civil Procedure, or its return marked “refused”, “unclaimed”, or other similar notation, as evidenced by appropriate notation of such fact by the postal authorities, and filed as a part of the record by the clerk shall be evidence of actual notice and shall be grounds for a default judgment. Process and notices delivered by registered or certified mail or by an alternative delivery service, with a return receipt, to an interested party's registered agent at the agent's address or to the address of the interested party, each as shown on the corporate records of a state secretary of state or other officer responsible for maintaining such records, shall be sufficient to bind the interested party as to notices and service of process.

(h) Prior to confirming the sale of a parcel, the court shall determine that a diligent effort has been made to give actual notice of the proceedings to all interested persons, as identified by the searches described in § 67-5-2502(c)(2).