Domains with DNS TXT v=spf1 include:spf.protection.outlook.com a:spf-cloud.mms.t-systems-service.com -all
There are 6 domains that have DNS TXT set to v=spf1 include:spf.protection.outlook.com a:spf-cloud.mms.t-systems-service.com -all. The top 6 records ordered by domain rank are listed below.