Domains with DNS TXT v=spf1 ip4:221.121.144.175 +a +mx include:spf.mailcluster.com.au include:spf.protection.outlook.com ~all
There is 1 domain that have DNS TXT set to v=spf1 ip4:221.121.144.175 +a +mx include:spf.mailcluster.com.au include:spf.protection.outlook.com ~all.