Domains with DNS TXT v=spf1 a include:dsmhosting.net include:mailgun.org include:zcsend.net include:spf.protection.outlook.com include:us._netblocks.mimecast.com ~all
There is 1 domain that have DNS TXT set to v=spf1 a include:dsmhosting.net include:mailgun.org include:zcsend.net include:spf.protection.outlook.com include:us._netblocks.mimecast.com ~all.