mx3.convergeict.com has no CNAME records.
Question and response
Question
dig mx3.convergeict.com. NS
Answer
The response has no answer records.
Authority
convergeict.com. 5774 SOA ns3.metroconnect.com.ph. sysdev.convergeict.com. 2026022410 3600 1800 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0