Email Formats
{
"mx": [
"10 us-smtp-inbound-1.mimecast.com.",
"10 us-smtp-inbound-2.mimecast.com."
],
"spf": [
"v=spf1 include:us._netblocks.mimecast.com ip4:74.91.80.0/20 include:_netblocks.icims.com ip4:204.155.62.38 include:spf.constantcontact.com include:servers.mcsv.net include:_spf.salesforce.com include:sendgrid.net include:zcsend.net ~all"
]
}