SOA
Start of Authority
Primary NS
Mailbox
hostmaster.mai-vn.com
Serial
2026052032
Refresh
14400
Retry
3600
Expire
1209600
Minimum TTL
86400
MX
Mail Exchangers
TXT
TXT Records
MS=ms63443884
v=spf1 mx include:emailserver.vn include:spf.protection.outlook.com -all