mta.hosting31.serverhs.org has no CNAME records.
Question and response
Question
dig mta.hosting31.serverhs.org. NS
Answer
The response has no answer records.
Authority
hosting31.serverhs.org. 5401 SOA ns1.webhs.org. reports.webhs.support. 2025120903 3600 1800 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0