I'm moving my food storage to a closet, and I wrote the expiration on the outside of the cans. I opened a previously plastic wrapped case of peaches from a case-lot sale, and one can felt empty and had mold all the way down the side. Is it possible the can punctured??? I've never seen anything like this. As a side, I'll always be opening and inspecting all cans in cases, as I also had a half-case of extremely (unopenable) dented cans in the middle of one case last year.