mailout.mailermage.com has no MX records.
Question and response
Question
dig mailout.mailermage.com. MX
Answer
The response has no answer records.
Authority
mailermage.com. 600 SOA ns05.domaincontrol.com. dns.jomax.net. 2025100605 28800 7200 604800 600
Additional
. 0 OPT ; payload 1280, xrcode 0, version 0, flags 0