spf-a.3bbmail.com. A RRSIG NSEC
Question and response
Question
dig smtpout.3bbmail.com. NSEC
Answer
smtpout.3bbmail.com. 120 NSEC spf-a.3bbmail.com. A RRSIG NSEC
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1220, xrcode 0, version 0, flags 0