Email Formats
{
"mx": [
"1 us-smtp-inbound-1.mimecast.com.",
"1 us-smtp-inbound-2.mimecast.com."
],
"spf": [
"v=spf1 mx a ptr ip4:209.29.209.0/24 include:sendgrid.net include:mail.zendesk.com include:_spf.google.com include:spf.bms.imprev.net include:_spf.elasticemail.com include:aspmx.pardot.com ~all"
]
}