Domains with DNS TXT v=spf1 include:spf.protection.outlook.com include:_netblocks.mimecast.com include:spf.constantcontact.com -all
There are 6 domains that have DNS TXT set to v=spf1 include:spf.protection.outlook.com include:_netblocks.mimecast.com include:spf.constantcontact.com -all. The top 6 records ordered by domain rank are listed below.