_dmarc.connectalk.com has no CNAME records.
Question and response
Question
dig _dmarc.connectalk.com. NS
Answer
The response has no answer records.
Authority
connectalk.com. 2603 SOA ns.ctalk.com. support.connectalk.com. 2026022001 1200 180 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0