The IONOS security team has blocked your server due to misuse. This can have two reasons:
You either send a newsletter whose emails have been marked as spam.
Your server is being abused by third parties.
If your server has a serial console, access it.
In both cases, please respond to the latest emails received from the security team. We will answer your inquiry within 24 hours.
Please note: Please leave the subject of the email unchanged.