To configure an SPF record, you need to add a TXT record to your domain's DNS settings. The TXT record should specify the IP addresses or domains that are allowed to send emails on behalf of your domain. A typical SPF record looks like this: v=spf1 ip4:192.0.2.0/24 include:_spf.example.com -all In this example, emails from IP range 192.0.2.0/24 and those listed in the SPF record of example.com are allowed to send emails.