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September 08, 2004
SPF Already Broken
Posted by Dana Blankenhorn
You can stop arguing over Meng Wong's SPF and Microsoft's attempts to use it as a Trojan Horse for its licensing schemes.
It's already broken.
Ciphertrust surveyed e-mail from May-August and its conclusion is conclusive:
It found that 34% more spam is passing SPF checks than legitimate e-mail.
Now SPF isn't totally useless. The system does protect against address spoofing and its nasty cousin phishing.
But it's still not a solution to the underlying problem. So try again.
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Dana Blankenhorn has been a business journalist for over 25 years and has covered the online world professionally since 1985. He founded the "Interactive Age Daily" for CMP Media, and has written for the Chicago Tribune, Advertising Age, and dozens of other publications over the years.
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