dns2.halloma.com has no MX records.
Question and response
Question
dig dns2.halloma.com. MX
Answer
The response has no answer records.
Authority
halloma.com. 3600 SOA a.misconfigured.powerdns.server. hostmaster.halloma.com. 2023111611 10800 3600 604800 3600
Additional
. 0 OPT ; payload 1680, xrcode 0, version 0, flags 0