Domains with DNS TXT v=spf1 include:spf.protection.outlook.com include:_netblocks.mimecast.com include:email.nimbleams.com -all
There is 1 domain that have DNS TXT set to v=spf1 include:spf.protection.outlook.com include:_netblocks.mimecast.com include:email.nimbleams.com -all.