San Francisco, May 21, 2010 – As an industry service, the Messaging Anti-Abuse Working Group (MAAWG), the largest global anti-spam industry organization, has released its first online training video and is opening the technical training sessions at its next meeting to non-members for the first time, both at no cost. The new four-part tutorial by leading experts on DomainKeys Identified Mail (DKIM) is now available at the MAAWG website, and the live training courses on DNS security, complaint feedback loops, and DKIM at the MAAWG 19th Gen