Domains with DNS TXT v=spf1 include:spf.protection.outlook.com include:spf.ess.ca.barracudanetworks.com -all

There are 545 domains that have DNS TXT set to v=spf1 include:spf.protection.outlook.com include:spf.ess.ca.barracudanetworks.com -all. The top 50 records ordered by domain rank are listed below.