Question and response
Question
dig yyz1.oracleemaildelivery.com. PTR
Answer
The response has no answer records.
Authority
yyz1.oracleemaildelivery.com. 300 SOA ns1.p68.dns.oraclecloud.net. hostmaster.yyz1.oracleemaildelivery.com. 731190 3600 600 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0