Domains with DNS TXT v=spf1 include:us._netblocks.mimecast.com a:spf.protection.outlook.com include:spf.constantcontact.com ~all
There is 1 domain that have DNS TXT set to v=spf1 include:us._netblocks.mimecast.com a:spf.protection.outlook.com include:spf.constantcontact.com ~all.