Email Formats
{
"mx": [
"10 us-smtp-inbound-1.mimecast.com.",
"10 us-smtp-inbound-2.mimecast.com."
],
"spf": [
"v=spf1 a mx ptr include:_netblocks.harvardservices.com include:_spf.plan.io include:us._netblocks.mimecast.com include:_netblocks.icims.com ~all"
]
}