Email Formats
{
"mx": [
"10 us-smtp-inbound-1.mimecast.com.",
"10 us-smtp-inbound-2.mimecast.com."
],
"spf": [
"v=spf1 include:us._netblocks.mimecast.com include:sendgrid.net include:aspmx.pardot.com include:spf.emailsignatures365.com include:_spf.salesforce.com ip4:198.2.128.0/18 ip4:148.105.8.0/21 ip4:205.201.128.0/20 ~all"
]
}