Question and response
Question
dig intersmtp.com. AAAA
Answer
The response has no answer records.
Authority
intersmtp.com. 86400 SOA ns0.bt.net. hostmaster.bt.net. 87 28800 7200 604800 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0