[tutfbhuf]

On Hetzner, you receive an abuse email with the directive to respond appropriately if your root server or VPS is involved in some kind of abuse related issue. In larger companies this happens quite frequently. I'm not sure what would happen if you ignore such email.

[Pi9h]

Hetzner will usually give you 24 hours to respond to abuse reports. Failure to do so will lead to locking of your server IP.

[justsomehnguy]

Just reply what you are sorry and you are fixing/fixed the issue. Till the next report.