If you need an SPF records added to your domain, you can do it in your DNS control panel or email support@elive.net and let us know what record to add to the domain and we will do it for you
Here is a good tool for helping you create one:
https://mxtoolbox.com/SPFRecordGenerator.aspx
You need to let us know what you need in the SPF record, we cannot create it for you, as we do not know what rules you are applying to your domain for where you send emails from.