Email Formats
{
"mx": [
"10 au-smtp-inbound-1.mimecast.com.",
"10 au-smtp-inbound-2.mimecast.com."
],
"spf": [
"v=spf1 ip4:159.135.228.246 ip4:203.32.185.0/24 ip4:103.3.196.0/24 include:au._netblocks.mimecast.com include:_spf.salesforce.com include:spf-au.iress.com -all"
]
}