SOA
Start of Authority
Primary NS
Mailbox
postmaster.cellebrain.com
Serial
20180927
Refresh
10800
Retry
3600
Expire
3600000
Minimum TTL
43200
NS
Nameservers
MX
Mail Exchangers
TXT
TXT Records
v=spf1 mx include:spf.ecounterp.com ip4:14.41.55.81 ip4:14.41.55.82 ~all
A