Domains with DNS TXT v=spf1 a mx include:spf.protection.outlook.com include:spf.x2connect.be include:spf.flowmailer.net -all
There is 1 domain that have DNS TXT set to v=spf1 a mx include:spf.protection.outlook.com include:spf.x2connect.be include:spf.flowmailer.net -all.