Doubts dog Microsoft spam plan

摘要

Even with Microsoft lending its clout to an expanding anti-spam movement centered on authenticating e-mail senders, experts caution the approach comes laden with technical challenges and unanswered questions. The software giant last week published its Caller ID for E-mail specification, which lays out how to thwart the spoofing of e-mail addresses, a popular spammer Wong, and the Lightweight MTI Authentication Protocol (LMAP) under development at the IETF.