Domains with DNS TXT v=spf1 ip4:209.53.242.170 include:spf.protection.outlook.com include:_spf.smtp.com include:us._netblocks.mimecast.com ~all
There is 1 domain that have DNS TXT set to v=spf1 ip4:209.53.242.170 include:spf.protection.outlook.com include:_spf.smtp.com include:us._netblocks.mimecast.com ~all.