Domains with DNS TXT v=spf1 +a +mx include:mailgun.org include:spf.mandrillapp.com include:spf.protection.outlook.com -all
There is 1 domain that have DNS TXT set to v=spf1 +a +mx include:mailgun.org include:spf.mandrillapp.com include:spf.protection.outlook.com -all.