Question and response
Question
dig mail.posti.com. NS
Answer
mail.posti.com. 5 CNAME https://outlook.com/posti.com.
Authority
com. 900 SOA a.gtld-servers.net. nstld.verisign-grs.com. 1771825511 1800 900 604800 900
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0