Email Formats
{
"mx": [
"1 usb-smtp-inbound-1.mimecast.com.",
"1 usb-smtp-inbound-2.mimecast.com."
],
"spf": [
"v=spf1 include:usb._netblocks.mimecast.com include:spf.protection.outlook.com ip4:70.23.60.152 ip4:70.23.60.146 ip4:70.23.60.147 ip4:65.51.79.99 ip4:65.51.79.100 -all"
]
}