IN A MASSIVE BLOW TO EFFORTS to have Utah’s do-not-e-mail law overturned, the U.S. Department of Justice weighed in with court papers supporting the state’s much-hated registry.

However, the effort left the biggest argument against the registry unaddressed.

In a brief filed Nov. 3, the Justice Department said that contrary to porn group Free Speech Coalition’s claims, the federal Can Spam Act does not supersede Utah’s so-called child protection registry act, and the state’s do-not e-mail registry doesn’t infringe on free speech.

Though mainstream marketers aren’t taking part in the Free Speech Coalition’s lawsuit against Utah, advertising trade groups have lined up against the state’s do-not e-mail registry, hoping the porn group wins its fight.

The Justice Department’s siding with the registry can’t be seen by these groups as good news.

In a massive blow to efforts to have Utah