copernica.net has no MX records.
Question and response
Question
dig copernica.net. MX
Answer
The response has no answer records.
Authority
copernica.net. 60 SOA dns1.proxi.nl. hostmaster.copernica.com. 1771944747 14400 1800 86400 60
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0