cpe.novanet.is has no MX records.
Question and response
Question
dig cpe.novanet.is. MX
Answer
The response has no answer records.
Authority
cpe.novanet.is. 86400 SOA ns1.nova.is. hostmaster.nova.is. 102 28800 7200 1814400 2073600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0