smtp.iwglogistics.com has no MX records.
Question and response
Question
dig smtp.iwglogistics.com. MX
Answer
The response has no answer records.
Authority
iwglogistics.com. 3600 SOA NS23.WORLDNIC.com. namehost.WORLDNIC.com. 124030516 10800 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0