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

There are 17 domains that have DNS TXT set to v=spf1 include:spf.protection.outlook.com include:spf.exclaimer.net include:authsmtp.com -all. The top 17 records ordered by domain rank are listed below.