Email Formats
{
"mx": [
"10 usb-smtp-inbound-1.mimecast.com.",
"10 usb-smtp-inbound-2.mimecast.com."
],
"spf": [
"v=spf1 ip4:199.66.101.226 ip4:74.117.226.245 include:mktomail.com include:spf.exclaimer.net include:_spf.messagegears.net include:customers.clickdimensions.com include:usb._netblocks.mimecast.com ~all"
]
}