Proton VPS ส่งเมล์มาตามนี้
An abuse ticket has been submitted with details as described in the mail.
We request you to take necessary action to resolve the abuse within 24 hours.
If no action is taken within 24 hours we will suspend the server.
Following are the details of the ticket submitted:
##########################################################################################
Subject: Open DNS Resolve Issue: 74.117.59.132
This Email is to notify you that our Shadowserver alerts have notify us that your server is being use to send UDP/DNS attacks to other networks.
We required your full attention on disabling DNS recursion on your DNS server to stop these outbound attacks.
More about this can be found at
https://dnsscan.shadowserver.org/ 
เค้าให้ผมทำอะไรครับ ผมไม่เข้าใจ ขอบคุณครับ