Email Formats
{
"mx": [
"10 us-smtp-inbound-1.mimecast.com.",
"10 us-smtp-inbound-2.mimecast.com."
],
"spf": [
"v=spf1 a ip4:12.23.113.132 ip4:97.74.232.61 include:sendgrid.net include:us._netblocks.mimecast.com include:spf.em.secureserver.net include:spf-westus.emailsignatures365.com ~all"
]
}