I just updated my qmail spam-blocking script Spamcheck so that it can be very very harsh and yet (probably) not lose any email in which I am interested, by virtue of sending a bounce message to the sender instructing them on how to get their message to me despite the filter. Since spammers don't ever use real return-paths or from-addresses, they will never receive this instructional message, but any genuine emailer who triggers the filter will. There is also code in there to prevent infinite arguments with autoresponders, and to keep returned-bounces and similar nastinesses from reaching my inbox. Preliminary testing looks promising enough that I have adopted it as the only filter I'm using.
[07:24]
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