On Mon, May 7, 2018 at 12:08 PM KuboF Hromoslav <kubof.hromoslav(a)gmail.com>
wrote:
On the lists "wikimedia-sk" and
"wikimedia-sk-oznamy", where I am admin,
we have received suspicious mass subscriptions (several tens in several
hours). They came from nowhere, all with @aol.com address (very unusual
for our target group) and all declared only first name. Most certainly some
bot.
Provisionally I have set them all for moderation. Eventually I could block
subscriptions from @aol.com addresses (no too big deal, because hardly
someone real in our audience is using them) but I prefer systemic solutions
and not to cure symptoms. And possibly someone else here is running into
the same problem.
Yeah, I saw (and did) the same for multimedia-l. Unfortunately there is no
sender filter for members. I think setting "From: .*(a)aol\.com" in the spam
filters would have the same result though and that one does affect members.
Maybe there is a way to do that globally instead of one-by-one for every
mailing list?