Email Formats
{
"mx": [
"10 us-smtp-inbound-1.mimecast.com.",
"10 us-smtp-inbound-2.mimecast.com."
],
"spf": [
"v=spf1 ip4:198.38.77.241 a mx ip4:198.38.77.162 include:relay.mailchannels.net include:us._netblocks.mimecast.com ~all"
]
}