Question and response
Question
dig mx.citibob.com. OPT
Answer
The response has no answer records.
Authority
citibob.com. 3600 SOA dns.citibob.com. hostmaster.citibob.com. 1376930663 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0