Selectmen violated the state’s Open Meeting law last year when a former board member sent e-mails to fellow selectmen about a matter relating to the town’s cable access provider, according to the state attorney general’s office. In a letter to Town Administrator Richard Brown, Assistant Attorney General Hanne Rush wrote that while “determining whether to license, or execute a contract with, a third party for cable access services is certainly a matter within the Board’s jurisdiction, [it] . . . should have been discussed during a properly posted meeting.” Selectmen chairman Paul Sadeck filed the complaint last year after he and Selectwoman Lisa Pacheco received e-mails about Lakeville Cable Access Media from Jean Fox, a former selectwoman. “I filed the complaint because I wanted this kind of activity to stop,” Sadeck said last week. “I knew I was right and I’m glad the decision came down the way it did. I believe in open government.” The attorney general’s office ordered selectmen to make public the content of Fox’s e-mails. They were read aloud at a recent board meeting and will be available for viewing on the town’s website.