Email Formats
{
"mx": [
"10 us-smtp-inbound-1.mimecast.com.",
"10 us-smtp-inbound-2.mimecast.com."
],
"spf": [
"v=spf1 ip4:198.207.187.0/24 ip4:208.99.160.192/27 ip4:208.81.212.0/22 ip4:107.20.210.250 ip4:52.1.14.157 a mx include:_netblocks.mimecast.com ~all"
]
}