SOA
Start of Authority
Primary NS
Mailbox
root.host236.vietnix.vn
Serial
2026100901
Refresh
3600
Retry
1800
Expire
1209600
Minimum TTL
86400
MX
Mail Exchangers
TXT
TXT Records
v=spf1 ip4:14.225.211.225 include:_spf.mta.vietnix.com ip4:103.200.23.236 +a +mx ~all
A