SPF: A Sender Policy Framework to Prevent Email Forgery

	SPF website
SPF: Sender Policy Framework The Anti-Forgery solution That's making the world a Safer place for email.


Sender Policy Framework

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2004.11.29

Read the definitive Sender Authentication Deployment White Paper that discusses SPF.

SPF has been receiving a lot of recent coverage. Please see NEWS for more articles.

SPF is Sender Policy Framework

SPF fights return-path address forgery and makes it easier to identify spoofs.
Domain owners identify sending mail servers in DNS.
SMTP receivers verify the envelope sender address against this information, and can distinguish authentic messages from forgeries before any message data is transmitted.

Find out more about SPF for:
Management Sysadmins Users

Adopting

SRS

RFCs

Mechanisms

	SPF is ushering in a new set of anti-spam systems, where email is spam unless proven otherwise. Accuracy will be critical. Is your organization ready?
	ISPs Colleges and Universities Government Email Service Providers Other Organizations Consulting Partnerships

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Or, make a contribution to SPF. Contributions of all forms help keep SPF going.

The openspf.org domain name was donated by James Couzens, and related domain names by John Pinkerton. POBox.com previously hosted this website and strongly supported the developement of SPF. Thanks!

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