Domains with DNS TXT v=spf1 ip4:216.218.207.108 include:relay.mailchannels.net ip4:216.37.42.27 include:spf.protection.outlook.com -all
There is 1 domain that have DNS TXT set to v=spf1 ip4:216.218.207.108 include:relay.mailchannels.net ip4:216.37.42.27 include:spf.protection.outlook.com -all.