fm3.chezaubert.net.dkim.fmhosted.com has no CNAME records.
Question and response
Question
dig fm3.chezaubert.net.dkim.fmhosted.com. NS
Answer
The response has no answer records.
Authority
chezaubert.net.dkim.fmhosted.com. 3600 SOA fmns1.messagingengine.com. postmaster.messagingengine.com. 2026030300 86226 600 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0