ns3.namesystem.se has no MX records.
Question and response
Question
dig ns3.namesystem.se. MX
Answer
The response has no answer records.
Authority
namesystem.se. 3600 SOA ns1.namesystem.se. registry.glesys.se. 2011080812 14400 2700 1814400 10800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0