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The current spam wave originates at 18.104.22.168. I have confirmed with another admin that this IP seems to be stable at least for today's spam.
They have selected instances via https://instances.noct.zone in the past, so if you're listed there you might be more at risk.
You can stop it for now by adding `deny 22.214.171.124;` to the server block in your nginx config.
your friendly local technology witch
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