Enabling DomainKeys for your account is a great way to help prevent email spoofing. 

How do DomainKeys work?

DomainKeys is an email authentication system that creates a digital signature for the message from the sending email server. This signature is then used by the receiving server to verify the sender and check that the email headers and content have not been changed. This helps prevent spam and phishing emails. Senders and receivers of email will not notice any difference since the creation and checking of the digital signature is performed in the "back end" by the sending and receiving email servers.

How do I enable DomainKeys?

DomainKeys can be quickly enabled in your account's cPanel.

1. First, log into your cPanel. 
2. Under the "Mail" subheader, click on "Email Authentication":

   

3. On the next page, click on the "Enable" button for DomainKeys:

   

4. You will receive a confirmation message that DomainKeys have been enabled. Click the "Go Back" link to return to the Email Authentication page.

   

5. Back on the Email Authentication page, you can verify that the DomainKeys status is now enabled and active on your account. 

   

It is that easy! You can also further help to prevent spam by enabling an SPF record for your domain.