mrtg.tailormadeservers.com has no CNAME records.
Question and response
Question
dig mrtg.tailormadeservers.com. NS
Answer
The response has no answer records.
Authority
tailormadeservers.com. 10800 SOA ns.tailormadeservers.com. PostMaster.tailormadeservers.com. 2025120861 86400 7200 3600000 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0