dns.lin-mar.com has no CNAME records.
Question and response
Question
dig dns.lin-mar.com. NS
Answer
The response has no answer records.
Authority
lin-mar.com. 3536 SOA dns.lin-mar.com. hostmaster.lin-mar.com. 1268221194 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0