On 14 Oct 2019, at 14:30, Nick via mailop <mailop@mailop.org> wrote: > If an ip address in the range is held by a legitimate mailer, you're > saying the legitimate mailer will be evicted to make way for the > spammer? Does that really happen?
No; but if you don't get any email from the 'legitimate' sender then your only signal is that from the neighbours. If a large percentage of them have a signal which is 'poor' (FSVO 'poor') then the inference is that the whole block is poisonous, and you bin it (or put mail from it in the junk folder). For 'small' operations, the visibility of the entire block is likely to be missing chunks. At Google's scale, they can see the entire operator as a single entity and make decisions based on that. Even we (at $workplace) have automation in place which responds to netblocks which go rogue and spew junk/invalid RCPT and so on, and we're a drop in the ocean compared to the 500lb gorillas like Google. Graeme _______________________________________________ mailop mailing list mailop@mailop.org https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop
