Three Ways To Authenticate E-Mail And Stop Spam Published: Sunday, January 1, 2006 Briefs, Case Studies, Papers, Reports Author(s) and Contributors: Author(s): Chris Beers Source(s) and Collection(s): Sources(s): Community ParentTopics: Identity and Access Management Productivity Applications and Systems Abstract Don't stop at filtering software. Sender authentication provides another defense against spam--but you'll have to choose from three methods. Download Resources Access HTML