In a message dated 98-01-12 17:04:37 EST, moore(_at_)cs(_dot_)utk(_dot_)edu
<< with few exceptions, the mail transport system should not be
doing mail filtering. the mail transport's job is to deliver
mail, not to make filtering decisions on behalf of the user.
if recipients want to filter their own mail, that's their
business, but then it's a UA-level thing.
mail filtering at the MTA is a must to avoid congestion and overloading of
"downstream" servers ... large ISPs like AOL (where I was Internet Product
Manager) implement MTA-level filtering out of necessity: a significant portion
of their traffic (ranging 5-50%) is spam or spam-related (responses, etc)...
not that existing filtering is helping that much ... :)
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