Domains with DNS TXT v=spf1 a mx include:spf.protection.outlook.com include:_spf.relay.mailprotect.be -all
There are 40 domains that have DNS TXT set to v=spf1 a mx include:spf.protection.outlook.com include:_spf.relay.mailprotect.be -all. The top 40 records ordered by domain rank are listed below.