Email Formats
{
"mx": [
"10 us-smtp-inbound-2.mimecast.com.",
"10 us-smtp-inbound-1.mimecast.com."
],
"spf": [
"v=spf1 mx ip4:70.88.97.1/29 ip4:208.72.102.114/29 ip4:8.18.226.137/29 ip4:198.74.250.73/29 ip4:12.239.121.38 -all"
]
}