Domains with DNS TXT v=spf1 a mx ptr include:spf.protection.outlook.com include:mailggun.org include:secureserver.net include:infusionmail.com ~all
There is 1 domain that have DNS TXT set to v=spf1 a mx ptr include:spf.protection.outlook.com include:mailggun.org include:secureserver.net include:infusionmail.com ~all.