Domains with DNS TXT v=spf1 a include:smtp.secureserver.net include:mailstore1.secureserver.net include:spf.protection.outlook.com ip4:104.47.56.175 include:_spfprod.ngpvan.com include:outboundmail.convio.net ~all
There is 1 domain that have DNS TXT set to v=spf1 a include:smtp.secureserver.net include:mailstore1.secureserver.net include:spf.protection.outlook.com ip4:104.47.56.175 include:_spfprod.ngpvan.com include:outboundmail.convio.net ~all.