Daron Demetris Kenney, federal prisoner # 02255-112, has filed an appeal from the district court’s order dismissing his 28 U.S.C. § 2255 motion as an unauthorized successive 28 U.S.C. § 2255 motion. Because Kenney had previously filed a 28 U.S.C. § 2255 motion challenging his conviction, see United States v. Kenney, No. 4:93-CR-134-S (N.D.Miss. Aug. 1, 2001) (unpublished), and because Kenney had not obtained this court’s authorization to file a second or successive 28 U.S.C. § 2255 motion, the district court lacked jurisdiction to consider Kenney’s motion. See 28 U.S.C. §§ 2244(b)(3)(A) and 2255; United States v. Key, 205 F.3d 773, 774 (5th Cir. 2000). Accordingly, Kenney’s appeal is DISMISSED. We do not reach the question certified by the district court.

APPEAL DISMISSED.