mxr.mfg.siteprotect.com has no CNAME records.
Question and response
Question
dig mxr.mfg.siteprotect.com. NS
Answer
The response has no answer records.
Authority
mfg.siteprotect.com. 300 SOA a.dns.hostway.net. hostmaster.siteprotect.com. 2025082508 28800 7200 86400 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0