Avoiding a controversy between Microsoft and its email competitors, an internet standards group approved two "experimental" antispam proposals, CNET reports. The Internet Engineering Steering Group (IESG), a division of the Internet Engineering Task Force (IETF), said it would publish two competing and overlapping sets of documents that define ways of authenticating email senders: Sender Policy Framework (SPF) and Sender ID. Critics have accused Microsoft of trying to strong-arm the industry into accepting Sender ID.