Email Formats
{
"mx": [
"10 us-smtp-inbound-1.mimecast.com.",
"10 us-smtp-inbound-2.mimecast.com."
],
"spf": [
"v=spf1 ip4:72.142.129.144/32 ip4:23.83.208.0/20 ip4:20.88.120.240/28 ip4:20.112.218.128/28 include:spf.protection.outlook.com include:us._netblocks.mimecast.com include:mail.zendesk.com include:mailgun.org include:spf.constantcontact.com -all"
]
}