EOF occurred in violation of protocol (_ssl.c:1131)

Hi @mnadalin, welcome to the LE community forum :slight_smile:

Yes, that seems highly likely from the messages shown.
Someone @lestaff can verify this for you later today.

In the meantime, is this public IP new to you?
Please show the public IP(s) with:
curl -4 ifconfig.co
curl -6 ifconfig.co

Can you connect securely from your server via curl to any other sites on the Internet?
curl -Iv https://google.com/

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