What sort of request volume did you get? How many per day were you sending out?
On average, zero per day, maybe 5 to 10 per year.
I'm really surprised that it's more than 1 ever.
At scale, there are a lot of confused people who do unexpected stuff. The maintainer of cURL has people contact him when a notice shows up in car software or when they think he is connected to hacking: https://daniel.haxx.se/blog/2018/02/16/why-is-your-email-in-... https://daniel.haxx.se/blog/2021/02/19/i-will-slaughter-you/