_netblocks.itsjefen.no has no MX records.
Question and response
Question
dig _netblocks.itsjefen.no. MX
Answer
The response has no answer records.
Authority
itsjefen.no. 86400 SOA ns3.itsjefen.no. drift.itsjefen.no. 2026022305 28800 7200 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0