mail.pn.cegid.cloud has no CNAME records.
Question and response
Question
dig mail.pn.cegid.cloud. NS
Answer
The response has no answer records.
Authority
pn.cegid.cloud. 9931 SOA a1-170.akam.net. ndd-tech.cegid.com. 2026030303 10800 3600 604800 38400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0