SOA
Start of Authority
Primary NS
Mailbox
tienhn.vinahost.vn
Serial
2022031001
Refresh
14400
Retry
3600
Expire
1209600
Minimum TTL
86400
NS
Nameservers
MX
Mail Exchangers
TXT
TXT Records
v=spf1 a a:spf.vinahost.vn mx +include:sendgrid.net +include:smtpservice.net ~all
A