Zone apex
Start of authority
Email
Serial
2015072800
Refresh
3h
Retry
1h
Expire
7d
Negative cache TTL
1h
Question and response
Question
dig _spf.onemail.vn. SOA
Answer
The response has no answer records.
Authority
onemail.vn. 3600 SOA ns-master.inet.vn. postmaster.inet.vn. 2015072800 10800 3600 604800 3600
Additional
. 0 OPT ; payload 1680, xrcode 0, version 0, flags 0