mms-smtp.telenor.net has no MX records.
Question and response
Question
dig mms-smtp.telenor.net. MX
Answer
The response has no answer records.
Authority
telenor.net. 300 SOA ns1.nextra.no. hostmaster.telenor.net. 2026030401 3600 600 604800 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0