Fighting Spam and Phishing with Sender ID

E-mail authentication built on the Sender ID Framework (SIDF) is gaining wide adoption, providing a major advancement in the fight against spam and phishing messages. In fact, more than a third of the world’s e-mail volume is already authenticated and SIDF-compliant. Using Send ID as well as other anti-spam features in Exchange Server 2007 can effectively protect customers from spam attacks and save on the total cost of operation. Here’s how it works and how to configure SIDF in Exchange Server 2007.

Exchange Server 2007: Fighting Spam and Phishing with Sender ID
https://www.microsoft.com/technet/technetmag/issues/2006/12/sidf/default.aspx