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ineffective
Authored by: sjk on Feb 23, '06 07:59:12PM

Briefly, the two main problems with your suggestion:

• There's no consistently accurate, reliable, and efficient way to verify that sender addresses on mail you receive are "real".
• Spam typically uses forged, but "real" (valid, RFC-compliant), addresses.

There are plenty of tools for detecting and filtering suspected spam (using different techniques) before it ever reaches your inbox. Even Apple Mail's default junk filter can often do a fairly decent job.



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