Email Formats
{
"mx": [
"10 mx1.emailsrvr.com.",
"20 mx2.emailsrvr.com."
],
"spf": [
"v=spf1 a mx ptr ip4:144.217.18.133 ip4:64.18.0.0/20 ip4:69.71.192.116/30 ip4:74.116.242.192/28 ip4:74.116.244.48/28 include:emailsrvr.com include:spf.greatmail.com include:_spf.google.com ~all"
]
}