smtpvm2.lexvm.voipinternetcable.net has no CNAME records.
Question and response
Question
dig smtpvm2.lexvm.voipinternetcable.net. NS
Answer
The response has no answer records.
Authority
voipinternetcable.net. 600 SOA ns01.momentumtelecom.com. sysops.momentumtelecom.com. 2024110608 28800 7200 3600 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0