Question and response
Question
dig nntp.dockersrc.us. NS
Answer
nntp.dockersrc.us. 5 CNAME mail.dockersrc.us.
Authority
dockersrc.us. 3627 SOA dns.dockersrc.us. dns-admin.dockersrc.us. 2026010376 10800 3600 1209600 38400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0