0x3ec6d231.ejb.customer.dk.telia.net has no MX records.
Question and response
Question
dig 0x3ec6d231.ejb.customer.dk.telia.net. MX
Answer
The response has no answer records.
Authority
ejb.customer.dk.telia.net. 86400 SOA dns101.telia.com. dns.telia.dk. 2603060455 28800 7200 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0