Domains with DNS TXT v=spf1 include:spf.protection.outlook.com a a:ds3b.horizon-it.co.uk ~all
There are 2 domains that have DNS TXT set to v=spf1 include:spf.protection.outlook.com a a:ds3b.horizon-it.co.uk ~all. The top 2 records ordered by domain rank are listed below.