Question and response
Question
dig imap.frionline.com.br. NS
Answer
imap.frionline.com.br. 5 CNAME mx.frionline.com.br.
Authority
frionline.com.br. 2549 SOA master.frionline.com.br. adtech.frionline.com.br. 2026030800 3600 600 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0