On Sun, Jan 4, 2026 at 1:07 PM Lena--- via mailop <[email protected]> wrote: > > > From: Atro Tossavainen <[email protected]> > > > > Wrong excuse: "the address refused 5xx for years". > > > > It's in the M3AAWG Spamtrap BCP > > Wrong excuse. > > > > Honest people might not know that. Not everybody sends emails monthly. > > > > If folks collect email lists just to have them and not to use them and > > then dig them out 20 years later with currency signs flashing in their > > eyes, they should know better. > > You cannot know was a marketing email sent to multiple people or was it a > personal email sent to single human. I keep all incoming personal emails > since 1996. I bet that you don't read emails to spamtraps with your eyes > before blacklisting all the sources.
Immediately "blacklisting all the sources" is not a good practice. Senders: Permission isn't forever. Good senders mail periodically, respect bounces, reconfirm periodically (especially based on lack of engagement), and don't make assumptions. A smart marketing sender is not just going to keep emailing you forever since 1996. Blocklists: Yep, a single trap hit from a single IP is a weak signal in 2026. Immediately jumping to blocklisting that IP is usually a bad idea. IP-based reputation and quick blocking is pretty broad and prone to false positives today, and has to be done carefully. "One trap hit leads to immediately blocklisting of the sending IP" is 1990s methodology. Yes, some people still do that. No, it's not smart or wise. You can actually make some inferences over whether or not a message was a personal message sent to a single human or if it instead it was a marketing message sent to many addresses. Larger data set, time, number of messages received, which domains, are those domains typically 1:1 mail domains or are they known bulk mail domains (these can also be discerned, with varying levels of success). You're picking a fight over something that has a minimal impact on most good senders and even has little impact on most well run blocklists. I can't really even tell who you're trying to disagree with here. Cheers, Al Iverson -- Al Iverson // 312-725-0130 // Chicago http://www.spamresource.com // Deliverability http://www.aliverson.com // All about me https://xnnd.com/calendar // Book my calendar _______________________________________________ mailop mailing list [email protected] https://list.mailop.org/listinfo/mailop
