Email Formats
{
"mx": [
"0 usb-smtp-inbound-1.mimecast.com.",
"10 usb-smtp-inbound-2.mimecast.com."
],
"spf": [
"v=spf1 a mx include:spf.protection.outlook.com include:usb._netblocks.mimecast.com ip4:104.239.249.248 include:sendgrid.net ~all"
]
}