Hi @zerowaste37. To be more precise, the message from the original post states:
184.108.40.206 has been blocked for the day, for attempting to mail too many invalid recipients.
The IP mentioned here does not belong to GoDaddy. This is an indication that the sending server at the IP address listed has one or more of their users sending too many emails to addresses that don't exist in our system. It doesn't mean that the person trying to send to you specifically is doing this. Email servers usually serve messages for many users. Usually, this is an indication that the sending server is being used to send spam. If people that are sending emails to you are getting a similar message, the sender would need to contact their email provider to see if there is any way to investigate and prevent this from happening. We have no control over 3rd party email servers beyond blocking them. Hope that makes sense.