Email Formats
{
"mx": [
"10 us-smtp-inbound-1.mimecast.com.",
"10 us-smtp-inbound-2.mimecast.com."
],
"spf": [
"v=spf1 a mx ptr include:mxlogic.net ip4:76.74.175.128/25 ip4:64.18.0.0/20 ip4:64.18.4.10/14 include:_netblocks.mimecast.com ~all"
]
}