We conclude, on the facts of this case, that the Wake County Superior Court erred in according full faith and credit to the 21 April 1971 Florida judgment.
Consistent with the requirement of Article IV, Section I of the Constitution of the United States, which requires that full faith and credit be accorded to a judgment of a court of another state, our Courts indulge a presumption (until the contrary is shown) that courts of other states have jurisdiction to enter judgments consistent with their laws. Consequently, our Courts, in appropriate circumstances, treat foreign judgments the same as domestic judgments. Thomas v. Frosty Morn Meats, Inc., 266 N.C. 523, 146 S.E. 2d 397 (1966).
However, the courts of North Carolina are under no obligation to give full faith and credit to a foreign judgment if the judgment is invalid in the state that rendered it. And to whose law do we look to determine the validity of a foreign judgment? The validity and effect of a judgment of another state must be determined by the laws of that state. Dansby v. North Carolina Mutual Life Insurance Co., 209 N.C. 127, 183 S.E. 521 (1936). Further, “[t]he mere recital in the judgment that the court rendering it had jurisdiction is not conclusive; the court of another state, in which the judgment is asserted as a cause of action, or as a defense, may, within limits, make its own independent inquiry into the jurisdiction of the court which rendered the judgment.” Reisdorf and Jaffe v. Langhorne, 28 N.C. App. 175, 176, 220 S.E. 2d 376, 377 (1975). See also Hosiery Mills v. Burlington Industries, 285 N.C. 344, 204 S.E. 2d 834 (1974).
A fundamental requirement of due process “is notice reasonably calculated, under all the circumstances, to apprise interested parties of the pendency of the action and afford them an opportunity to present their objections.” Mullane v. Central Hanover Bank & Trust Co., 339 U.S. 306, 314, 94 L.Ed. 865, 873 (1950). Consequently, a defendant may challenge a foreign judg-*392merit as violative of public policy and constitutional due process when he can show that he received no notice of the proceedings resulting in the judgment and was afforded no opportunity to appear and defend against the plaintiff’s allegations. Id. See, Reisdorf, 28 N.C. App. 175, 220 S.E. 2d 376 (1975).
In the case sub judice, Paul Boyles states both in his Answer and his sworn affidavit before the Wake County Superior Court, that he was never notified of either Alma Boyles’ Motion for Money Judgment or the Judgment filed 21 April 1971. In support of her Motion for Money Judgment, Alma Boyles produced an “Exhibit of Service” upon Paul Boyles. The “Exhibit of Service” is an envelope addressed to Paul Boyles at 205 Lenape Drive, Berwyn, Pennsylvania, which was apparently sent Certified Mail, Return Receipt Requested, by Alma Boyles’ Florida attorney. The envelope indicates that two notices were left at the address on Lenape Drive (one on 18 March 1971 and another on 29 March 1971) and, that subsequently, the Certified letter was returned to the sender, marked “Unclaimed.” The Return Receipt is blank and unsigned. Thus, Alma Boyles’ “Exhibit of Service” affirmatively shows that Paul Boyles received no actual notice of the hearing which resulted in the judgment which the courts of this State have now been asked to accord “full faith and credit.”
In determining whether the Circuit Court of the Eleventh Judicial Circuit in Dade County, Florida, had a sufficient basis for concluding that the notice to Paul Boyles was “provided timely and in accordance with the laws of the State of Florida, ...” we look, as we must, to the laws of Florida to determine the validity of the Florida judgment. Dansby, 209 N.C. 127, 183 S.E. 2d 521 (1936). In a similar case involving an Indiana money judgment granted after the defendant therein “failed to claim” a Registered letter, we looked at the laws of the State of Indiana. In that case, our Supreme Court refused to give full faith and credit to the judgment because an Indiana statute required a “refusal,” not merely a “failure,” to claim the notice in order to validate service by Registered mail when the notice was not actually received by the party to be served. Casey v. Barker, 219 N.C. 465, 14 S.E. 2d 429 (1941).
In the case sub judice, the Certified letter was returned marked “Unclaimed,” not “Refused.” The distinction is meaningful *393under Florida statutory and case law. Moreover, due process requires more than “a feint” when actual notice is the objective. Mullane v. Central Hanover Bank & Trust Co., 339 U.S. at 315, 94 L.Ed. at 874 (1950).
Florida Rule of Civil Procedure, Fla. Stat. Ann. Rule 1.080(a) (West 1982) provides that every pleading subsequent to the initial pleading shall be served on each party.1 Paul Boyles was not served. Actual notice was attempted, but it was never received. Realizing that actual service or notice is sometimes impossible, Florida, as do other states, provides for constructive service (service of process by publication, Fla. Stat. Ann. § 49.021 (West 1969)) and substitute service (service on non-residents by Certified Mail, Return Receipt Requested, Fla. Stat. Ann. § 48.161(1) (West 1982)) in certain types of cases. No alternative method of service of notice on Paul Boyles was attempted in this case.
Under Florida case law, notice and an opportunity to be heard must be afforded a party against whom a money judgment is sought. Hilson v. Hilson, 127 So. 2d 126 (1961). See also Reichert v. Appel, 74 So. 2d 674 (1954). In Kosch v. Kosch, 113 So. 2d 547 (1959), the Supreme Court of Florida held that parties to a divorce decree, entered with jurisdiction over the parties and the subject matter, could be brought before the court in a supplemental proceeding for modification of the alimony award and that the institution of a new proceeding based on formal service of process in order to modify the support award was not necessary. In Kosch, the husband was served notice by mail at his address in South Carolina advising him of the time and place of hearing on his wife’s motion in the cause. The wife also sent a copy of the Notice to various attorneys allegedly representing the husband. Although neither Notice was sent Registered or Certified Mail, Return Receipt Requested, the husband received the Notice and entered a special appearance contesting the service of process. The Kosch Court specifically found merit in the wife’s position *394that the husband could be brought before the trial court upon notice mailed to him, “so long as he was afforded actual notice and a reasonable opportunity to defend.” 113 So. 2d at 549. Unlike the husband in Kosch, Paul Boyles had no actual notice in this case. Notice by regular mail was deemed sufficient and reasonable in Kosch because it afforded the husband an adequate opportunity to be heard.2
Lendsay v. Cotton, 123 So. 2d 745 (1960), which involved the attempted service of process under the Florida non-resident motorist statute, is also instructive because it involves a situation in which notice by mail was not received. In Lendsay, the Registered letter sent to the defendant was subsequently returned, marked “unclaimed.” An affidavit of service was then filed with the trial court indicating that the defendant failed to claim the Registered letter, and the trial court ruled that service of process upon defendant was sufficient to give the court jurisdiction. The Florida Court of Appeals reversed the trial court, saying: “[t]he fact that the appellant did not claim the registered letter is susceptible not only to the inference that he refused to do so, but is also susceptible to the inference that he did not then live at the address to which the letter was directed.”3 Id. at 747. The Lendsay Court also suggested, relying on a Delaware case, Paxson v. Crowson, 47 Del. 114, 87 A. 2d 881 (1952), that the plaintiff could have caused another notice to be delivered or tendered to the defendant by sending it special delivery. As we suggested " earlier, no alternative method reasonably calculated to provide defendant with actual notice of the proceedings was ever used by Alma Boyles. Further, no efforts were made to give Paul Boyles constructive notice of the proceedings.
Admittedly, the Wake County Superior Court may have been able to draw an inference that Paul Boyles refused to claim or *395accept the notice. For example, the record suggests that Paul Boyles had regularly sent child support payments, as opposed to alimony payments, to Alma Boyles, some of which presumably came from 205 Lenape Drive, Berwyn, Pennsylvania, during the time service was attempted. Further, Paul Boyles failed, in his Answer and in his affidavit filed with the Court, to deny that his correct mailing address in March and April of 1971 was 205 Lenape Drive, Berwyn, Pennsylvania. Still further is the following statement in defendant’s affidavit, filed 16 September 1981, which suggests that Alma Boyles knew how to get in touch with him and correctly addressed the Certified letter to him: “My wife has harassed me with dozens of motions and complaints through the years.”
The Wake County Superior Court, stacking inference upon inference and using negative inferences, could have concluded that Paul Boyles chose to ignore the Certified letter since he correctly surmised it was some legal notice of process. The problem, however, is that we must look to the bases the Florida Circuit Court judge had for determining that Paul Boyles had been timely served in accordance with the laws of Florida. All that was before the Circuit Court judge in Florida in 1971 was Alma Boyles’ “Exhibit of Service” which was returned to her attorney marked “Unclaimed.” Under the Florida authorities cited above, that was not sufficient. Paul Boyles was entitled to reasonable notice which afforded him an opportunity to be heard on Alma Boyles’ motion in the cause. Kosch, 113 So. 2d 547 (1959). The record affirmatively shows that this did not occur, and the judgment sought to be enforced is not valid under Florida law.
For the reasons stated, the judgment below is
Reversed.
Judge Hedrick concurs.
Judge WEBB dissents.