mailout.gconnect.net has no CNAME records.
Question and response
Question
dig mailout.gconnect.net. NS
Answer
The response has no answer records.
Authority
gconnect.net. 900 SOA ns0.gconnect.net. dnsmaster.gconnect.net. 2025090901 7200 7200 1209600 7200
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0