About six months ago, an anonymous tipster sent The State newspaper in Columbia, S.C., copies of e-mail messages supposedly exchanged between Gov. Mark Sanford and a woman named Maria in Argentina.

Reporters sent e-mail back to the originating e-mail address and to the woman, whose e-mail address was included, in an effort to verify that the messages were genuine. They never heard back, and so the paper did not publish them until Wednesday, after Mr. Sanford admitted having an affair…

Late Wednesday, The State posted several of the e-mail messages it received in December on its Web site and was to print more in Thursday’s paper. But with one mystery solved, another endures: Mr. Chapman said he still did not know who sent the e-mail to the paper in the first place. “It’s kind of a moot point,” he said, “but I’m still curious.”