Domains with DNS TXT v=spf1 include:secureserver.net include:sendgrid.net include:spf.protection.outlook.com -all

There are 20 domains that have DNS TXT set to v=spf1 include:secureserver.net include:sendgrid.net include:spf.protection.outlook.com -all. The top 20 records ordered by domain rank are listed below.