but when I get mail from a list with a list signature I recognize, I just
deliver it because it's never spam. Here's a little thought experiment:

Why is it never spam? You propose that I blindly trust every maillist I
subscribe to?

Yes, of course. I've been subscribing to mailing lists for 35 years and the number of times they've leaked spam is approximately never, other than a brief era in the 1990s when a few spammers (Krazy Kevin) spammed through lists that didn't limit mail to senders.

On the rare occasions they do, the subscribers yell at the list manager who fixes it. This has worked fine for literally decades, and I don't understand why anyone expects that to change just because DKIM or DMARC or some other FUSSP arrives on the scene. I doubly don't understand why anyone thinks that spammers, who have totally ignored mailing lists since lists limited mail to subscribers botnets removed bandwidth bottlenecks, would change.

Regards,
John Levine, [email protected], Taughannock Networks, Trumansburg NY
Please consider the environment before reading this e-mail.

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