Domains with DNS TXT v=spf1 ip4:51.161.174.19 include:relay.mailchannels.net include:spf.protection.outlook.com -all
There are 26 domains that have DNS TXT set to v=spf1 ip4:51.161.174.19 include:relay.mailchannels.net include:spf.protection.outlook.com -all. The top 26 records ordered by domain rank are listed below.