relay-smtp.complea-hosting.dk has no MX records.
Question and response
Question
dig relay-smtp.complea-hosting.dk. MX
Answer
The response has no answer records.
Authority
complea-hosting.dk. 3600 SOA ns1.complea-hosting.dk. hostmaster.complea-hosting.dk. 23647 900 600 86400 3600
Additional
. 0 OPT ; payload 4000, xrcode 0, version 0, flags 0