mail4.multinet.com.pk has no CNAME records.
Question and response
Question
dig mail4.multinet.com.pk. NS
Answer
The response has no answer records.
Authority
multinet.com.pk. 2903 SOA ns1.multi.net.pk. admin.ns1.multi.net.pk. 2026021201 43200 1800 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0