From: Kee Hinckley <nazgul(_at_)somewhere(_dot_)com>
...
While it won't solve the spam problem--reigning in the legitimate
bulk mailers will help a lot. It will also make tools like DCC more
useful, since if you can recognize email as bulk, and it isn't
tagged, the chance of false positives drops significantly.
No, reliable tags indicating bulk mail would not help the DCC but make
the DCC redundant. The purpose of the DCC is to detect bulk mail.
Whether a given message is also unsolicited and so unsolicite bulk or
spam must be based on local, often per-user considerations. One
person's spam really is another person's valuable newsletter.
Instead of using the DCC to reject any bulk mail that is not locally
whitelisted, you could reject any ESPC tagged mail that is not locally
whitelisted. This might not be what they have in mind, but given the
example of the Topica and Habeas, it's the best they can hope for.
On the other hand, tags on bulk mail proving that it is certified
solicited such as Habeas hopes to provide would help the DCC. Then
more of those local determinations of solicited-ness for bulk mail
could be delegated to bulk senders. False positives resulting from
missing local whitelist entires would decrease.
Vernon Schryver vjs(_at_)rhyolite(_dot_)com
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