smtp.linkbymail.fr has no NS records.
NS records for this zone are defined at linkbymail.fr.
NS records for this zone are defined at linkbymail.fr.
Question and response
Question
dig smtp.linkbymail.fr. NS
Answer
The response has no answer records.
Authority
linkbymail.fr. 900 SOA amrns1501.accenture.com. dnsadmin.accenture.com. 6 10800 3600 604800 900
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0