no silver bullet or single solution to stop or combat spam

There is no silver bullet or single solution to stop or combat spam, phishing and online deception — it takes a combination of innovative technologies, user education, effective and strong enforcement, and collaboration with industry, business, and governments. The Sender ID Framework is an example of a simple yet innovative, cost effective and easy-todeploy solution, developed in collaboration with organizations throughout the world. SIDF has two parts: a DNS record that identifies SMTP servers authorized to send e-mail,
and an authentication mechanism that uses that DNS record to verify that inbound e-mai is from an authorized server. Together with reputation data, SIDF plays an important role in the fight against spam by authenticating the sender and applying reputation data. This enables valid messages that might otherwise be identified as bad to be delivered to the
Inbox, and conversely keeps messages that are spoofed and do not pass authentication out
of the Inbox. In doing so, SIDF helps protect users from unwanted e-mail, delivers the email
that users want, and helps keep company brands protected from bad messages that
may hurt their reputation and expose their customers to risk.
Sophisticated spammers recognize that domains that have implemented SIDF are highly
resistant to spoofing and phishing attacks and are not worth their time. As adoption of SIDF
has increased, we have witnessed spammers moving to softer targets, providing early
adopters of SIDF a competitive advantage. Large international banks, online retailers such
as eBay and PayPal, and online service providers such as GoDaddy.com and Windows Live
Hotmail have all implemented Sender-ID and have benefited from the protection it
provides their brand and their customers.

Download the full review at Microsoft 

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