mail10.rulemailer.se has no NS records.
NS records for this zone are defined at rulemailer.se.
NS records for this zone are defined at rulemailer.se.
Question and response
Question
dig mail10.rulemailer.se. NS
Answer
The response has no answer records.
Authority
rulemailer.se. 1800 SOA kara.ns.cloudflare.com. dns.cloudflare.com. 2398471480 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0