SOA
Start of Authority
Primary NS
Mailbox
hostmaster.stackdns.com
Serial
1723127492
Refresh
1800
Retry
900
Expire
1209600
Minimum TTL
300
MX
Mail Exchangers
TXT
TXT Records
v=spf1 mx a include:mailgun.org include:sendgrid.net include:spf.protection.outlook.com include:relay.mailchannels.net ~all
A