Please note that this guide is only valid for domains using the DirectAdmin servers for their emails, and also domains using our nameservers.
To enable DKIM, follow these steps.
1) Login to DirectAdmin and select 'Email Manager' and then 'E-mail Accounts'
2) On the list of email accounts, you should see 'Enable DKIM' on the right-hand side. Simply click this button and it will activate it
It will add the necessary DNS entries to your domain.