Domains with DNS TXT v=spf1 include:spf.protection.outlook.com include:us._netblocks.mimecast.com include:eu._netblocks.mimecast.com -all

There are 108 domains that have DNS TXT set to v=spf1 include:spf.protection.outlook.com include:us._netblocks.mimecast.com include:eu._netblocks.mimecast.com -all. The top 50 records ordered by domain rank are listed below.