Domains with DNS TXT v=spf1 include:us._netblocks.mimecast.com include:spf.protection.outlook.com -all
There are 3,139 domains that have DNS TXT set to v=spf1 include:us._netblocks.mimecast.com include:spf.protection.outlook.com -all. The top 50 records ordered by domain rank are listed below.