Question and response
Question
dig smtp-dmz1.co.csgsystems.com. HTTPS
Answer
The response has no answer records.
Authority
csgsystems.com. 900 SOA ns1.csgsystems.com. postmaster.csgsystems.com. 2014021664 900 600 1209600 900
Additional
. 0 OPT ; payload 4000, xrcode 0, version 0, flags 0