How to change the SPF advanced settings in cPanel

Step 1: Login to cPanel Account.
Step 2: Under Mail section, click on Email Authentication.
Step 3: To add additional hosts, servers, IP addresses (or) include lists to our SPF configuration, click Add in respective section.
Step 4: Similarly, to remove hosts, servers, IP addressses (or) include lists from our SPF configuration, we need to click on Remove in respective section.
Step 5: To exclude all other domains that are not specifically defined in our configuration, select the All Entry check box.
Step 6: To overwrite all existing SPF records, select the Overwrite Existing Entries check box.
Step 7: Click Update.