SOA
Start of Authority
Primary NS
Mailbox
root.example.com
Serial
2017062123
Refresh
3600
Retry
3600
Expire
604800
Minimum TTL
86400
NS
Nameservers
MX
Mail Exchangers
TXT
TXT Records
v=spf1 ip4:194.87.5.72 ip4:194.87.5.27 ip4:194.87.5.8 ip4:194.87.5.78 ip4:194.87.5.90 a mx ~all
A