Domains with DNS TXT v=spf1 mx a ip4:216.37.42.252 ip4:216.17.94.183 include:spf.protection.outlook.com include:spf.constantcontact.com include:spf.memberzone.com -all
There is 1 domain that have DNS TXT set to v=spf1 mx a ip4:216.37.42.252 ip4:216.17.94.183 include:spf.protection.outlook.com include:spf.constantcontact.com include:spf.memberzone.com -all.