mdhost02.meritdesignshost.net has no MX records.
Question and response
Question
dig mdhost02.meritdesignshost.net. MX
Answer
The response has no answer records.
Authority
meritdesignshost.net. 86400 SOA ns104.mjwebexperts.host. jose.mjwebexperts.com. 2025123101 3600 1800 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0