How do I add an SPF record for my server's hostname?

Question

How do I add an SPF record for my server's hostname?

Answer

If your server is an authoritative nameserver for the hostname's domain, you can add the hostname SPF record in your server's WHM on the page at Home » Email » Email Deliverability. If your server is not an authoritative nameserver for the hostname's domain, you must add the hostname's SPF record onto the authoritative nameservers for the domain.