relay3.recruitingmail.net has no CNAME records.
Question and response
Question
dig relay3.recruitingmail.net. NS
Answer
The response has no answer records.
Authority
recruitingmail.net. 10800 SOA ns1.markmonitor.com. hostmaster.markmonitor.com. 2026021302 7200 900 1209600 172800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0