lx-nx.com has no MX records.
Question and response
Question
dig lx-nx.com. MX
Answer
The response has no answer records.
Authority
lx-nx.com. 900 SOA ns1.reedelsevier.com. hostmaster.lexisnexis.com. 70 3600 900 2419200 900
Additional
. 0 OPT ; payload 1220, xrcode 0, version 0, flags 0