Email Formats
{
"mx": [
"10 us-smtp-inbound-1.mimecast.com.",
"10 us-smtp-inbound-2.mimecast.com."
],
"spf": [
"v=spf1 ip4:216.251.174.50 ip4:212.159.203.83 include:spf.protection.outlook.com include:us._netblocks.mimecast.com include:mailgun.org include:_spf.salesforce.com ~all"
]
}