mailrelay3.partner.co.il has no CNAME records.
Question and response
Question
dig mailrelay3.partner.co.il. NS
Answer
The response has no answer records.
Authority
partner.co.il. 600 SOA pdns.goldenlines.net.il. postmaster.goldenlines.net.il. 2026030903 28800 3600 604800 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0