Email Formats
{
"mx": [
"10 us-smtp-inbound-1.mimecast.com.",
"10 us-smtp-inbound-2.mimecast.com."
],
"spf": [
"v=spf1 ip4:173.13.70.149 include:us._netblocks.mimecast.com include:sendgrid.net include:mandrillapp.com ip4:198.21.7.178 ip4:50.31.45.105 include:_spf.psm.knowbe4.com -all"
]
}