Question and response
Question
dig postoffice.mx71.net. NS
Answer
postoffice.mx71.net. 5 CNAME mailcow.mx71.net.
Authority
mx71.net. 2272 SOA ns1.ns71.net. domadm.ketele.at. 2026020302 28800 7200 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0