lexstat.com has no MX records.
Question and response
Question
dig lexstat.com. MX
Answer
The response has no answer records.
Authority
lexstat.com. 900 SOA ns1.reedelsevier.com. hostmaster.lexisnexis.com. 48 3600 900 2419200 900
Additional
. 0 OPT ; payload 1220, xrcode 0, version 0, flags 0