Email Formats
{
"mx": [
"10 us-smtp-inbound-1.mimecast.com.",
"10 us-smtp-inbound-2.mimecast.com."
],
"spf": [
"v=spf1 ip4:70.242.196.253 ip4:38.107.248.253 ip4:75.140.231.253 ip4:192.254.121.248 include:us._netblocks.mimecast.com include:mailgun.org include:_phishspf.knowbe4.com ~all"
]
}