Email Formats
{
"mx": [
"10 us-smtp-inbound-1.mimecast.com.",
"10 us-smtp-inbound-2.mimecast.com."
],
"spf": [
"v=spf1 mx a include:us._netblocks.mimecast.com ip4:52.168.74.181 ip4:40.76.87.143 ip4:40.71.251.222 include:spf.protection.outlook.com include:_spf.salesforce.com include:sendgrid.net include:8211830.spf10.hubspotemail.net ~all"
]
}