Re: [Asrg] Spam detection system proposal

[Keith Moore <moore@cs.utk.edu>]

> In order to remove bad addresses (as Justin Mason pointed out), or
> honor unsubscribes, spammers would need to supply either a valid
> return address or a Web page somewhere that's trackable.

yes, but they don't have to use the same return address or web address
for subsequent spam.  thus the value of this identifier in blacklisting
them is near zero.

Keith
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