Domains with DNS TXT v=spf1 include:spf.protection.outlook.com include:spf.ess.barracudanetworks.com include:mailgun.org ~all
There are 32 domains that have DNS TXT set to v=spf1 include:spf.protection.outlook.com include:spf.ess.barracudanetworks.com include:mailgun.org ~all. The top 32 records ordered by domain rank are listed below.