On 14.10.19 20:57, Michael Wise via mailop wrote: > Having the mail bounce at the edge is a VERY useful signal for any spammers > trying to enhance their deliverability.
Not bouncing mails at edge is a very useful signal for any spammer too, because he delivered an email and is getting paid? Spammers also enhance their deliverability by all kinds of tracking nonsense you still allow them to use. > This question has different answers depending on if you're guarding 1 > mailbox, 10 - 100,000 or over a million. > The larger the number of mailboxes, the more we need to do filtering > post-DATA. Of course I don't have the experience in the last category, but I'd like to learn. Why can't you reject emails post-DATA? Is it a performance issue? Google or Bing find 935.000.000 search results in 0,60 seconds for the word "spam", but they can't do a spam check in that amount of time? You can still have users mark mails as spam and improve your filters. And you can still learn about false positives - just not by your user, but the sender of an email (or by the user after the sender contacted him in a different way). Or if the user explicitely allows a sender by adding them to their address book or whatever - as you do already. And yes, I am trolling a little or playing devils advocate in this matter. Reason being that I feel that we just rely on a mechanism that has a lot of issues and that might be done better if someone more intelligent and experienced than me did think about it instead of accepting this as given. Regards, Thomas Walter -- Thomas Walter Datenverarbeitungszentrale FH Münster - University of Applied Sciences - Corrensstr. 25, Raum B 112 48149 Münster Tel: +49 251 83 64 908 Fax: +49 251 83 64 910 www.fh-muenster.de/dvz/ _______________________________________________ mailop mailing list mailop@mailop.org https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop
