Email Formats
{
"mx": [
"10 usb-smtp-inbound-1.mimecast.com.",
"10 usb-smtp-inbound-2.mimecast.com."
],
"spf": [
"v=spf1 a ip4:98.101.51.158 ip4:72.15.254.252 include:spf.protection.outlook.com include:usb._netblocks.mimecast.com -all"
]
}