mail.interlayer.net has no CNAME records.
Question and response
Question
dig mail.interlayer.net. NS
Answer
The response has no answer records.
Authority
interlayer.net. 3500 SOA interlayer.net.interlayer.net. bbennett.datapacket.net.interlayer.net. 2025111310 10800 3600 1209600 10800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0