thenetworkfactory.nl has no MX records.
Question and response
Question
dig thenetworkfactory.nl. MX
Answer
The response has no answer records.
Authority
thenetworkfactory.nl. 3600 SOA ns1.es.vodafone.nl. esservicedesk\.nl.vodafone.com. 2010178065 10800 3600 2419200 3600
Additional
. 0 OPT ; payload 1220, xrcode 0, version 0, flags 0