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

There are 28 domains that have DNS TXT set to v=spf1 include:spf.protection.outlook.com include:spf.mandrillapp.com include:_spf.salesforce.com -all. The top 28 records ordered by domain rank are listed below.