Domains with DNS TXT v=spf1 include:_spf.salesforce.com include:_spf.cybox.email include:spf.protection.outlook.com -all
There are 3 domains that have DNS TXT set to v=spf1 include:_spf.salesforce.com include:_spf.cybox.email include:spf.protection.outlook.com -all. The top 3 records ordered by domain rank are listed below.