Miss. Code Ann. § 91-15-15

Any purchaser or mortgagee of real property subject to a power of appointment, who is without actual notice, shall be deemed to have notice of a release of the power when the original or duplicate original is filed for record in the chancery clerk’s office in the county and judicial district thereof in which the particular real property so purchased or mortgaged is located, and when the deed, will, or other instrument creating the power, or a duly attested copy thereof, is recorded in the same office, and an appropriate notation is entered on the margin of the will or deed book where the instrument creating the power is recorded, referring to the deed book and page where the release is recorded.