I was indeed thinking of multiple lists confirming the same behavior. But that will never fully exclude Asaf's concerns. 

The use case I'm thinking about is not the individual annoying user (no rush with that) but rather the spammer that sends the same spam to all kinds of mailing lists. For that, some automated process would speed up things considerably, and avoid cluttering the system. There may be better solutions to address this though.

Lodewijk

On Mon, May 10, 2021 at 1:04 AM Dimitar Dimitrov <dimitar.dimitrov@wikimedia.de> wrote:
Yes, some global & human review seems necessary.

Maybe a higher threshold would make sense. E.g. if a user gets blocked on two or three lists, then a global block is triggered.

На сб, 8.05.2021 г. в 14:20 ч. Asaf Bartov <abartov@wikimedia.org> написа:
(This could also be an attack vector, though. 

Imagine a local conflict resulting in list admin A marking person B's posts as spam on that local list, effectively silencing person B across all Wikimedia lists.

Without mitigation against that [e.g. a global review queue of marked spam before it becomes a global block], I would be wary of such a feature.)

  A.

On Sat, 8 May 2021, 02:05 Kunal Mehta <legoktm@debian.org> wrote:
On 5/7/21 3:04 PM, effe iets anders wrote:
> With the new mailman, I'm really excited to see global bans. Is there
> already some workflow we're supposed to follow to mark spam? It would be
> great if listadmins could mark stuff as spam and that would then trigger
> global bans somehow if it happened multiple times. I know I can file a
> ticket, but want to make sure we first arrive on a desirable solution
> before we throw it into the dev's lap(s) :)

Yeah, that would be really nice. In the past this has been proposed as
"Allow list admins to train spam filters"[1] after GNOME patched their
Mailman to do so.

Upstream mailman3 has a bug for this as well[2], where they suggest that
a plugin could be written for this. If someone writes said plugin and it
works, we can definitely deploy/enable it.

In the meantime I would suggest if you notice a new spam problem, post
here, see if other list admins also say they're having similar problems,
and then we sysadmins can take action.

[1] https://phabricator.wikimedia.org/T244241
[2] https://gitlab.com/mailman/mailman/-/issues/88

-- Kunal
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