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

There are 36 domains that have DNS TXT set to v=spf1 include:spf.protection.outlook.com include:spf.mandrillapp.com include:secureserver.net -all. The top 36 records ordered by domain rank are listed below.