Email Formats
{
"mx": [
"10 us-smtp-inbound-1.mimecast.com.",
"10 us-smtp-inbound-2.mimecast.com."
],
"spf": [
"v=spf1 include:us._netblocks.mimecast.com include:spfus.doxim.com include:vertifi.com include:gateways.firstdata.com include:sendgrid.net ip4:170.62.34.195 ip4:50.234.139.251 ~all"
]
}