Domains with DNS TXT v=spf1 ip4:216.37.42.254 include:spf.protection.outlook.com include:_spfprod.ngpvan.com include:relay.mailchannels.net -all
There is 1 domain that have DNS TXT set to v=spf1 ip4:216.37.42.254 include:spf.protection.outlook.com include:_spfprod.ngpvan.com include:relay.mailchannels.net -all.