"America Online said Thursday that it will not support a Microsoft-backed antispam technology called Sender ID.
The online giant cited "lackluster" industry support and compatibility issues with the antispam technology SPF, or Sender Policy Framework, that AOL supports.
AOL's moves come days after the Internet Engineering Task Force standards body voted down the Sender ID proposal. The IETF said Microsoft's decision to keep secret a patent proposal for the technology was unacceptable. Open-source groups also pulled their support of Sender ID, claiming its licensing restrictions were too strict. AOL agreed with the IETF fallout and added its own reasoning. "