mail.web43.lws-hosting.com has no CNAME records.
Question and response
Question
dig mail.web43.lws-hosting.com. NS
Answer
The response has no answer records.
Authority
web43.lws-hosting.com. 10800 SOA ns1.dnshostservices.com. cpanel-sysadmin.lws.info. 2026020200 3600 1800 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0