userv2.octn.net has no MX records.
Question and response
Question
dig userv2.octn.net. MX
Answer
The response has no answer records.
Authority
octn.net. 86400 SOA ns1.teknikbyran.com. registry.teknikbyran.com. 2026022276 28800 7200 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0