On Tue, 28 Jun 2022 00:21:00 -0700 Keith Lofstrom <[email protected]> wrote: > I need a better spam filter process.
On Tue, Jun 28, 2022 at 03:45:06PM +0000, Cy wrote: > /etc/postfix/main.cf. Then I can make a "from_someone: user" line any time I > have to > provide an email address. When "someone" sells me out to spammers. An OK answer, but not to the question I asked, or relevant to my situation. I am asking for a multi-site collaborative spam filter for postfix, not losing long-term email collaborations. My communities are not so ephemeral or trivial that I can abandon my net presence and start another. Explanation: "[email protected]" and "[email protected]" have been "out there" since the beginning of the internet domain system; [email protected] before that, bang paths to ucbvax before that, back to the late 1970s. Tens of thousands of legitimate email correspondents have used them and still do, hundreds over the last few months, some after silent intervals of two decades. I have a HUGE white-list with most of those correspondents. Unfortunately, some are "domain homeless" and frequently change their email providers and addresses. They may have abandoned their individuality to "google consumerism". Over the decades, I have used my main email addresses in many journal papers and publications. Readers contact me, sometimes decades after publication, leading to new collaborations and friendships. Hiding behind transient aliases thwarts that precious but unpredictable collaboration. Some are unwelcome, but blacklists work, until the unwelcome change addresses to pester me again. Trolls don't understand "go away", but postfix can. In "one time use" situations, a throwaway email address like Cy suggests makes sense. "two time use" email addresses with time delays between uses -- ordering items from rural China through Alibaba, with very long delivery delays, for example -- is another maintenance issue for one-time addresses. Perhaps solvable using yet another hypothetical postfix plug-in (suggestions?). But spambots ALSO harvest my permanent email addresses and spew crap at me. Fortunately, they spew the same or very similar crap to thousands of others. Networked spam detection could easily detect that. Indeed, gmail (with millions of users) gets thousands of copies of the same spam, very close in time, allowing Google to DETECT that spam-sign coincidence. Google bots may use such detection to filter crap feeding ALL of their captive gmail users, so that Google doesn't waste disk space or user connection bandwidth on spam. I imagine large corporate and academic email systems can do something similar. Many use open source software, which implies the existence of open-source-compatible tools for a broadcast-spam detection process. If that process is collaborative among those large organizations, they can "divide and conquer" spammers before wasting their own disk space and user connection bandwidth. I ask to collaborate with that hypothetical shared detection and filtering tool. Perhaps it does not yet exist, because most developers are not innovators, merely cogs in someone else's innovation system. OTOH, perhaps some clever young lass or lad WILL create such tools, earning a small fortune selling support to corporations and universities, and maybe even me. ---- So, howzabout it? Does anybody on this list know of tools like I am asking for, or dream of developing them? Are there any innovators or entrepreneurs on the PLUG list? Keith -- Keith Lofstrom [email protected]
