Zone apex
Start of authority
Email
Serial
2
Refresh
2h
Retry
15m
Expire
14d
Negative cache TTL
1d
Question and response
Question
dig _spf.smtp.com. SOA
Answer
The response has no answer records.
Authority
smtp.com. 900 SOA ns-1304.awsdns-35.org. awsdns-hostmaster.amazon.com. 2 7200 900 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0