Domains with DNS TXT v=spf1 include:spf.protection.outlook.com include:sendgrid.net include:spf-au.emailsignatures365.com -all

There are 13 domains that have DNS TXT set to v=spf1 include:spf.protection.outlook.com include:sendgrid.net include:spf-au.emailsignatures365.com -all. The top 13 records ordered by domain rank are listed below.