Domains with DNS TXT v=spf1 include:spf.protection.outlook.com include:spf.smtp2go.com include:authsmtp.com -all

There is 1 domain that have DNS TXT set to v=spf1 include:spf.protection.outlook.com include:spf.smtp2go.com include:authsmtp.com -all.

Top Domains with TXT set to v=spf1 include:spf.protection.outlook.com include:spf.smtp2go.com include:authsmtp.com -all