Microsoft to spammers: go phish [e-mail security]

This paper compares the capabilities of two new e-mail security technologies specifically aimed at addressing the problem of spamming, especially phishing. On one hand is Microsoft´s proposal, called Sender ID, and on the other is DomainKeys Identified Mail (DKIM) from Cisco Systems Inc. and Yahoo Inc. While both proposals feature similar e-mail verification capabilities, Microsoft´s Sender ID has problems when it comes to forwarding messages as it is unable to tell whether forwarded mail is legitimate or spam. There is a proposal, however, to combine the features of both systems and using some complementary filters.