America Online on Monday announced it has decided to support Microsoft’s new version of Sender ID e-mail authentication technology, in addition to its ongoing support of Sender Policy Framework, another authentication protocol, as a possible spam solution. AOL had originally announced in September that it would not back Sender ID for various reasons. That was at the same time that the Internet Engineering Task Force indicated its own concerns about adopting Sender ID. Microsoft since has submitted a new version of Sender ID to the IETF that addresses both AOL’s and the IETF’s concerns. "We endorse Sender ID as a viable technology in the testing phase," said Nicholas Graham, spokesman at Dulles, Va.-based AOL.