Comment 3 for bug 1602608

Does it matter where the request comes from? Anyone can send post-requests to the mailman page (subscribers, bots, hackers etc) and mailman should not fail in any case IMHO.

> Can you explain exactly what the scenario is that triggers this error?
This is the minimal example I could find:
curl https://mail.example.com/cgi-bin/mailman/subscribe/news -d "language='" -H "Content-Type: text/plain;charset=UTF-8"
You can of course add as many other data as you want.