mail.towngas.marketing has no MX records.
Question and response
Question
dig mail.towngas.marketing. MX
Answer
The response has no answer records.
Authority
towngas.marketing. 300 SOA ns1.onlydomains.com. root.onlydomains.com. 2019110701 28800 7200 604800 86400
Additional
. 0 OPT ; payload 1680, xrcode 0, version 0, flags 0