Domains with DNS TXT v=spf1 a mx ip4:3.13.136.37 include:relay.mailchannels.net include:spf.protection.outlook.com ~all
There is 1 domain that have DNS TXT set to v=spf1 a mx ip4:3.13.136.37 include:relay.mailchannels.net include:spf.protection.outlook.com ~all.