Question and response
Question
dig smtp1.song.fi. NS
Answer
smtp1.song.fi. 5 CNAME smtp21.tdc.fi.
Authority
tdc.fi. 3600 SOA ns-fi.sn.net. dns.tdc.fi. 2024110600 28800 7200 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0