Activate DKIM Keys in NetSuite
You must activate the DKIM keys before you can verify your setup. A user with an Administrator role or a user with the Full level of the Set Up Company permission can perform the following procedure.
To activate DKIM keys in your NetSuite account:
Go to Setup > Company > Email > Email Preferences.
On the Email Preferences page, check the Active box for each key you have set up.
Click Save. All outgoing email messages sent from NetSuite using the domain or subdomain you entered will have a DKIM header.
This code header contains the domain authentication information but does not add any text to your messages.
Test your DKIM setup. See Verify Your DKIM Setup.