Domains with DNS TXT v=spf1 a mx include:spf.protection.outlook.com include:sendgrid.net include:spf.mandrillapp.com ip4:210.10.207.50 -all
There are 2 domains that have DNS TXT set to v=spf1 a mx include:spf.protection.outlook.com include:sendgrid.net include:spf.mandrillapp.com ip4:210.10.207.50 -all. The top 2 records ordered by domain rank are listed below.