Question and response
Question
dig smtpauth.ritternet.com. NS
Answer
smtpauth.ritternet.com. 5 CNAME smtp-v.av-mx.com.
Authority
av-mx.com. 900 SOA ns1.neonova.net. hostmaster.neonova.net. 2026022400 10800 3600 604800 900
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0