Email Formats
{
"mx": [
"10 us-smtp-inbound-2.mimecast.com.",
"10 us-smtp-inbound-1.mimecast.com."
],
"spf": [
"v=spf1 mx include:us._netblocks.mimecast.com include:_spf.elasticemail.com include:spf.constantcontact.com include:_spf.psm.knowbe4.com ip4:147.160.167.0/26 -all"
]
}