Domains with DNS TXT v=spf1 +a +mx include:spf.mandrillapp.com include:spf.protection.outlook.com -all

There are 29 domains that have DNS TXT set to v=spf1 +a +mx include:spf.mandrillapp.com include:spf.protection.outlook.com -all. The top 29 records ordered by domain rank are listed below.