The online giant cited "lackluster" industry support and compatibility issues with the antispam technology SPF, or Sender Policy Framework, that AOL supports.With AOL, Microsoft, and Yahoo each backing different anti-spam technologies, the potential for consensus seems slim. The three companies can't even get their instant messaging networks to get along.
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.