Domains with DNS TXT v=spf1 include:spf.protection.outlook.com include:23971370.spf06.hubspotemail.net include:mailgun.org -all
There is 1 domain that have DNS TXT set to v=spf1 include:spf.protection.outlook.com include:23971370.spf06.hubspotemail.net include:mailgun.org -all.