mx4.egensajt.se has no CNAME records.
Question and response
Question
dig mx4.egensajt.se. NS
Answer
The response has no answer records.
Authority
egensajt.se. 2239 SOA ns1.egensajt.se. registry.egensajt.se. 2026022500 28800 7200 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0