Add an SPF record to prevent spoofing
When it comes to email deliverability, most people are trying to figure out how to ensure their mail lands in the inbox. But what if you want to tell email providers that they should not accept email from a domain name? This might be the case if you have a parked domain that someone is trying to spoof when it sends email.
One option is to create a Sender Policy Framework (SPF) record that says all mail should be rejected. To do this, go to your domain name registrar and manage the DNS for the domain.
Create a TXT record and include this text:
This will tell mailbox providers that your domain name should not send any email, giving them an indication that email with your address should be considered spam.
Domain name owners should consider adding SPF records to their parked domains if they don’t use them for email.